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virtualbox/doc/manual/en_US/man_VBoxManage-controlvm.xml
Daniel Baumann df1bda4fe9
Adding upstream version 7.0.20-dfsg.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
2025-06-22 09:56:04 +02:00

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<?xml version="1.0" encoding="UTF-8"?>
<!--
manpage, user manual, usage: VBoxManage controlvm
-->
<!--
Copyright (C) 2006-2023 Oracle and/or its affiliates.
This file is part of VirtualBox base platform packages, as
available from https://www.virtualbox.org.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation, in version 3 of the
License.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see <https://www.gnu.org/licenses>.
SPDX-License-Identifier: GPL-3.0-only
-->
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd"[
<!ENTITY % all.entities SYSTEM "all-entities.ent">
%all.entities;
]>
<refentry id="vboxmanage-controlvm" lang="en">
<refentryinfo>
<pubdate>$Date: 2023-01-17 15:15:46 +0100 (Tue, 17 Jan 2023) $</pubdate>
<title>VBoxManage controlvm</title>
</refentryinfo>
<refmeta>
<refentrytitle>VBoxManage-controlvm</refentrytitle>
<manvolnum>1</manvolnum>
</refmeta>
<refnamediv>
<refname>VBoxManage-controlvm</refname>
<refpurpose>change state and settings for a running virtual machine</refpurpose>
<refclass>&product-name;</refclass>
</refnamediv>
<refsynopsisdiv>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-pause">
<!-- The 'id' is mandatory and must start with 'synopsis-'. -->
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">pause</arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-resume">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">resume</arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-reset">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">reset</arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-poweroff">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">poweroff</arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-savestate">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">savestate</arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-acpipowerbutton">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">acpipowerbutton</arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-acpisleepbutton">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">acpisleepbutton</arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-reboot">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">reboot</arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-shutdown">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">shutdown</arg>
<arg choice="opt">--force</arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-keyboardputscancode">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">keyboardputscancode</arg>
<arg choice="req"><replaceable>hex</replaceable></arg>
<arg rep="repeat"><replaceable>hex</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-keyboardputstring">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">keyboardputstring</arg>
<arg choice="req"><replaceable>string</replaceable></arg>
<arg rep="repeat"><replaceable>string</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-keyboardputfile">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">keyboardputfile</arg>
<arg choice="req"><replaceable>filename</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-setlinkstate">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">setlinkstate<replaceable>N</replaceable></arg>
<group choice="req">
<arg choice="plain">on</arg>
<arg choice="plain">off</arg>
</group>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-nic">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">nic<replaceable>N</replaceable></arg>
<group choice="req">
<arg choice="plain">null</arg>
<arg choice="plain">nat</arg>
<arg choice="plain">bridged</arg>
<arg choice="plain">intnet</arg>
<arg choice="plain">hostonly</arg>
<arg choice="plain">generic</arg>
<arg choice="plain">natnetwork</arg>
</group>
<arg><replaceable>device-name</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-nictrace">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">nictrace<replaceable>N</replaceable></arg>
<group choice="req">
<arg choice="plain">on</arg>
<arg choice="plain">off</arg>
</group>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-nictracefile">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">nictracefile<replaceable>N</replaceable></arg>
<arg choice="req"><replaceable>filename</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-nicproperty">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">nicproperty<replaceable>N</replaceable></arg>
<arg choice="req"><replaceable>prop-name</replaceable>=<replaceable>prop-value</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-nicpromisc">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">nicpromisc<replaceable>N</replaceable></arg>
<group choice="req">
<arg choice="plain">deny</arg>
<arg choice="plain">allow-vms</arg>
<arg choice="plain">allow-all</arg>
</group>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-natpf">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">natpf<replaceable>N</replaceable></arg>
<group choice="req">
<arg choice="plain">[<replaceable>rulename</replaceable>]<arg choice="plain">,tcp</arg></arg>
<arg choice="plain">udp,<arg><replaceable>host-IP</replaceable></arg>,<arg choice="plain"><replaceable>hostport</replaceable>,</arg><arg><replaceable>guest-IP</replaceable></arg>,<arg choice="plain"><replaceable>guestport</replaceable></arg></arg>
</group>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-natpf-delete">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">natpf<replaceable>N</replaceable> delete</arg>
<arg choice="req"><replaceable>rulename</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-guestmemoryballoon">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">guestmemoryballoon</arg>
<arg choice="req"><replaceable>balloon-size</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-usbattach">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">usbattach</arg>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>address</replaceable></arg>
</group>
<arg>--capturefile=<replaceable>filename</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-usbdetach">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">usbdetach</arg>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>address</replaceable></arg>
</group>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-audioin">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">audioin</arg>
<group choice="req">
<arg choice="plain">on</arg>
<arg choice="plain">off</arg>
</group>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-audioout">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">audioout</arg>
<group choice="req">
<arg choice="plain">on</arg>
<arg choice="plain">off</arg>
</group>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-clipboard-mode">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">clipboard mode</arg>
<group choice="req">
<arg choice="plain">disabled</arg>
<arg choice="plain">hosttoguest</arg>
<arg choice="plain">guesttohost</arg>
<arg choice="plain">bidirectional</arg>
</group>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-clipboard-filetransfers">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">clipboard filetransfers</arg>
<group choice="req">
<arg choice="plain">on</arg>
<arg choice="plain">off</arg>
</group>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-draganddrop">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">draganddrop</arg>
<group choice="req">
<arg choice="plain">disabled</arg>
<arg choice="plain">hosttoguest</arg>
<arg choice="plain">guesttohost</arg>
<arg choice="plain">bidirectional</arg>
</group>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-vrde">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">vrde</arg>
<group choice="req">
<arg choice="plain">on</arg>
<arg choice="plain">off</arg>
</group>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-vrdeport">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">vrdeport</arg>
<arg choice="req"><replaceable>port</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-vrdeproperty">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">vrdeproperty</arg>
<arg choice="req"><replaceable>prop-name</replaceable>=<replaceable>prop-value</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-vrdevideochannelquality">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">vrdevideochannelquality</arg>
<arg choice="req"><replaceable>percentage</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-setvideomodehint">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">setvideomodehint</arg>
<arg choice="req"><replaceable>xres</replaceable></arg>
<arg choice="req"><replaceable>yres</replaceable></arg>
<arg choice="req"><replaceable>bpp</replaceable></arg>
<arg><arg><replaceable>display</replaceable></arg><group>
<arg choice="plain">enabled:yes | no</arg>
<arg><replaceable>x-origin</replaceable>&nbsp;<replaceable>y-origin</replaceable></arg>
</group></arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-setscreenlayout">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">setscreenlayout</arg>
<arg choice="req"><replaceable>display</replaceable></arg>
<group choice="req">
<arg choice="plain">on</arg>
<arg choice="plain">primary <replaceable>x-origin</replaceable>&nbsp;<replaceable>y-origin</replaceable>&nbsp;<replaceable>x-resolution</replaceable>&nbsp;<replaceable>y-resolution</replaceable>&nbsp;<replaceable>bpp</replaceable></arg>
<arg choice="plain">off</arg>
</group>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-screenshotpng">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">screenshotpng</arg>
<arg choice="req"><replaceable>filename</replaceable></arg>
<arg><replaceable>display</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-recording">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">recording</arg>
<group choice="req">
<arg choice="plain">on</arg>
<arg choice="plain">off</arg>
</group>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-recording-screens">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">recording screens</arg>
<group choice="req">
<arg choice="plain">all</arg>
<arg choice="plain">none</arg>
<arg choice="plain"><replaceable>screen-ID</replaceable>[,<replaceable>screen-ID</replaceable>...]</arg>
</group>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-recording-filename">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">recording filename</arg>
<arg choice="req">filename</arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-recording-videores">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">recording videores</arg>
<arg choice="req"><replaceable>width</replaceable>x<replaceable>height</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-recording-videorate">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">recording videorate</arg>
<arg choice="req"><replaceable>rate</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-recording-videofps">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">recording videofps</arg>
<arg choice="req"><replaceable>fps</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-recording-maxtime">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">recording maxtime</arg>
<arg choice="req"><replaceable>sec</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-recording-maxfilesize">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">recording maxfilesize</arg>
<arg choice="req"><replaceable>MB</replaceable></arg>
</cmdsynopsis>
<!--
<cmdsynopsis id="synopsis-vboxmanage-controlvm-recording-opts">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">recording opts</arg>
<arg choice="req"><replaceable>key</replaceable>=<arg><replaceable>value</replaceable></arg></arg>
</cmdsynopsis>
-->
<cmdsynopsis id="synopsis-vboxmanage-controlvm-setcredentials">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">setcredentials</arg>
<arg choice="req"><replaceable>username</replaceable></arg>
<arg choice="plain">--passwordfile=<group choice="req">
<arg choice="plain"><replaceable>filename</replaceable></arg>
<arg choice="plain"><replaceable>password</replaceable></arg>
</group></arg>
<arg choice="req"><replaceable>domain-name</replaceable></arg>
<arg choice="plain">--allowlocallogon=<group choice="req">
<arg choice="plain">yes</arg>
<arg choice="plain">no</arg>
</group></arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-teleport">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">teleport</arg>
<arg choice="req">--host=<replaceable>host-name</replaceable></arg>
<arg choice="req">--port=<replaceable>port-name</replaceable></arg>
<arg>--maxdowntime=<replaceable>msec</replaceable></arg>
<group>
<arg choice="plain">--passwordfile=<replaceable>filename</replaceable></arg>
<arg choice="plain">--password=<replaceable>password</replaceable></arg>
</group>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-plugcpu">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">plugcpu</arg>
<arg choice="req"><replaceable>ID</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-unplugcpu">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">unplugcpu</arg>
<arg choice="req"><replaceable>ID</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-cpuexecutioncap">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">cpuexecutioncap</arg>
<arg choice="req"><replaceable>num</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-vm-process-priority">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">vm-process-priority</arg>
<group choice="req">
<arg choice="plain">default</arg>
<arg choice="plain">flat</arg>
<arg choice="plain">low</arg>
<arg choice="plain">normal</arg>
<arg choice="plain">high</arg>
</group>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-webcam-attach">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">webcam attach</arg>
<arg><replaceable>pathname</replaceable><arg><replaceable>settings</replaceable></arg></arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-webcam-detach">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">webcam detach</arg>
<arg><replaceable>pathname</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-webcam-list">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">webcam list</arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-addencpassword">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">addencpassword</arg>
<arg choice="req"><replaceable>ID</replaceable></arg>
<group choice="req">
<arg choice="plain"><replaceable>password-file</replaceable></arg>
<arg choice="plain">-</arg>
</group>
<arg>--removeonsuspend=<group choice="plain">
<arg choice="plain">yes</arg>
<arg choice="plain">no</arg>
</group></arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-removeencpassword">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">removeencpassword</arg>
<arg choice="req"><replaceable>ID</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-removeallencpasswords">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">removeallencpasswords</arg>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-changeuartmode">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">changeuartmode<replaceable>N</replaceable></arg>
<group choice="plain">
<arg choice="plain">disconnected</arg>
<arg choice="plain">server <replaceable>pipe-name</replaceable></arg>
<arg choice="plain">client <replaceable>pipe-name</replaceable></arg>
<arg choice="plain">tcpserver <replaceable>port</replaceable></arg>
<arg choice="plain">tcpclient <replaceable>hostname</replaceable>:<replaceable>port</replaceable></arg>
<arg choice="plain">file <replaceable>filename</replaceable></arg>
<arg choice="plain"><replaceable>device-name</replaceable></arg>
</group>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-autostart-enabled">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">autostart-enabled<replaceable>N</replaceable></arg>
<group choice="plain">
<arg choice="plain">on</arg>
<arg choice="plain">off</arg>
</group>
</cmdsynopsis>
<cmdsynopsis id="synopsis-vboxmanage-controlvm-autostart-delay">
<command>VBoxManage controlvm</command>
<group choice="req">
<arg choice="plain"><replaceable>uuid</replaceable></arg>
<arg choice="plain"><replaceable>vmname</replaceable></arg>
</group>
<arg choice="plain">autostart-delay<replaceable>seconds</replaceable></arg>
</cmdsynopsis>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para>
The <command>VBoxManage controlvm</command> command enables you to
change the state of a running virtual machine (VM). The following
sections describe the subcommands that you can use:
</para>
<refsect2 id="vboxmanage-controlvm-pause">
<title>Pause a Virtual Machine</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> pause</command> command
temporarily stops the execution of a VM. When paused, the VM's
state is not permanently changed.
</para>
<para>
The VM window appears as gray and the title bar of the window
indicates that the VM is currently Paused. This action is
equivalent to selecting <emphasis role="bold">Pause</emphasis>
from the <emphasis role="bold">Machine</emphasis> menu of the
GUI.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-resume">
<title>Resume a Paused Virtual Machine</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> resume</command> command
restarts the execution of a paused VM. This action is equivalent
to selecting <emphasis role="bold">Resume</emphasis> from the
<emphasis role="bold">Machine</emphasis> menu of the GUI.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-reset">
<title>Reset a Virtual Machine</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> reset</command> command
performs a cold reset the VM. This command has the same effect
on a VM as pressing the Reset button on a physical computer.
</para>
<para>
The cold reboot immediately restarts and reboots the guest
operating system (OS). The state of the VM is not saved prior to
the reset, so data might be lost. This action is equivalent to
selecting <emphasis role="bold">Reset</emphasis> from the
<emphasis role="bold">Machine</emphasis> menu of the GUI.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-poweroff">
<title>Power Off a Virtual Machine</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> poweroff</command> command
powers off the VM. This command has the same effect on a VM as
pulling the power cable on a physical computer.
</para>
<para>
The state of the VM is not saved prior to poweroff, so data
might be lost. This action is equivalent to selecting
<emphasis role="bold">Close</emphasis> from the
<emphasis role="bold">Machine</emphasis> menu of the GUI or to
clicking the VM window's Close button, and then selecting
<emphasis role="bold">Power Off the Machine</emphasis>.
</para>
<para>
When in the powered off state, you can restart the VM. See
<xref linkend="vboxmanage-startvm" />.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-savestate">
<title>Save the State of a Virtual Machine</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> savestate</command> command
saves the current state of the VM to disk and then stops the VM.
</para>
<para>
This action is equivalent to selecting
<emphasis role="bold">Close</emphasis> from the
<emphasis role="bold">Machine</emphasis> menu of the GUI or to
clicking the VM window's Close button, and then selecting
<emphasis role="bold">Save the Machine State</emphasis>.
</para>
<para>
When in the saved state, you can restart the VM. It will continue
exactly in the state you saved.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-acpipowerbutton">
<title>Send an APCI Shutdown Signal to a Virtual Machine</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> acpipowerbutton</command>
command sends an ACPI shutdown signal to the VM. This command
has the same effect on a VM as pressing the Power button on a
physical computer.
</para>
<para>
So long as the VM runs a guest OS that provides appropriately
configured ACPI support, this command triggers an operating
system shutdown from within the VM.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-acpisleepbutton">
<title>Send an APCI Sleep Signal to a Virtual Machine</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> acpisleepbutton</command>
command sends an ACPI sleep signal to the VM.
</para>
<para>
So long as the VM runs a guest OS that provides appropriately
configured ACPI support, this command triggers a sleep mechanism
from within the VM.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-reboot">
<title>Reboot the guest OS</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> reboot</command>
command asks the guest OS to reboot itself.
</para>
<para>
This commands requires Guest Additions to be installed in the VM.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-shutdown">
<title>Shut down the guest OS</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> shutdown</command>
command asks the guest OS to halt + shutdown, optionally forcing
the shutdown.
</para>
<para>
This commands requires Guest Additions to be installed in the VM.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-keyboardputscancode">
<title>Send Keyboard Scancodes to a Virtual Machine</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> keyboardputscancode</command>
command sends keyboard scancode commands to the VM.
</para>
<para>
For information about keyboard scancodes, see
<ulink url="http://www.win.tue.nl/~aeb/linux/kbd/scancodes-1.html" />.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-keyboardputstring">
<title>Send Keyboard Strings to a Virtual Machine</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> keyboardputstring</command>
command sends keyboard strings to the VM.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-keyboardputfile">
<title>Send a File to a Virtual Machine</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> keyboardputfile</command>
command sends a file to the VM.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-setlinkstate">
<title>Set the Link State for a Virtual Machine</title>
<remark role="help-copy-synopsis"/>
<para>
<command>VBoxManage controlvm <replaceable>vmname</replaceable>
setlinkstate<replaceable>N</replaceable></command> command
enables you to connect or disconnect the virtual network cable
from the network interface instance
(<replaceable>N</replaceable>). Valid values are
<literal>on</literal> and <literal>off</literal>. The default
value is <literal>on</literal>.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-nic">
<title>Set the Type of Networking to Use for a Virtual Machine</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable>
nic<replaceable>N</replaceable></command> command specifies the
type of networking to use on the specified VM's virtual network
card. <replaceable>N</replaceable> numbering begins with
<literal>1</literal>.
</para>
<para>
The following valid network types are also described in
<xref linkend="networkingmodes" />:
</para>
<itemizedlist>
<listitem><para>
<literal>null</literal> specifies that the VM is is not
connected to the host system.
</para></listitem>
<listitem><para>
<literal>nat</literal> specifies that the VM uses network
address translation (NAT).
</para></listitem>
<listitem><para>
<literal>bridged</literal> specifies that the VM uses
bridged networking.
</para></listitem>
<listitem><para>
<literal>intnet</literal> specifies that the VM communicates
with other VMs by using internal networking.
</para></listitem>
<listitem><para>
<literal>hostonly</literal> specifies that the VM uses
host-only networking.
</para></listitem>
<listitem><para>
<literal>natnetwork</literal> specifies that the VM uses NAT
networking.
</para></listitem>
<listitem><para>
<literal>generic</literal> specifies that the VM has access
to rarely used submodes
</para></listitem>
</itemizedlist>
</refsect2>
<refsect2 id="vboxmanage-controlvm-nictrace">
<title>Trace the Network Traffic of a Virtual Machine</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable>
nictrace<replaceable>N</replaceable></command> command enables
you to trace the network traffic on the specified virtual
network card (<replaceable>N</replaceable>).
<replaceable>N</replaceable> numbering begins with
<literal>1</literal>. Valid values are <literal>on</literal> and
<literal>off</literal>. The default value is
<literal>off</literal>.
</para>
<para>
If you did not configure a file name for the trace file then
a default one is used, placing it in the VM subdirectory.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-nictracefile">
<title>Specify the Network Traffic Trace Log File for a Virtual Machine</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable>
nictracefile<replaceable>N</replaceable></command> command
enables you to specify the name of the network traffic trace log
file for the specified virtual network card
(<replaceable>N</replaceable>). <replaceable>N</replaceable>
numbering begins with <literal>1</literal>.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-nicpromisc">
<title>Specify the Promiscuous Mode to Use for a Virtual Machine</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable>
nicpromisc<replaceable>N</replaceable></command> command enables
you to specify how to handle promiscuous mode for a bridged
network. The default value of <literal>deny</literal> hides any
traffic that is not intended for this VM. The
<literal>allow-vms</literal> value hides all host traffic from
this VM but enables the VM to see traffic to and from other VMs.
The <literal>allow-all</literal> value removes this restriction
completely.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-nicproperty">
<title>Specify the Network Backend Property Values for a Virtual Machine</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable>
nicproperty<replaceable>N</replaceable>
<replaceable>prop-name</replaceable>=<replaceable>prop-value</replaceable></command>
command, in combination with <literal>nicgenericdrv</literal>,
enables you to pass property values to rarely-used network
backends.
</para>
<para>
Those properties are backend engine-specific, and are different
between UDP Tunnel and the VDE backend drivers. See
<xref linkend="network_udp_tunnel" />.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-natpf">
<title>Specify a NAT Port Forwarding Rule for a Virtual Machine</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable>
natpf<replaceable>N</replaceable></command> command specifies a
NAT port-forwarding rule. See <xref linkend="natforward"/>.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-natpf-delete">
<title>Delete a NAT Port Forwarding Rule for a Virtual Machine</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable>
natpf<replaceable>N</replaceable> delete</command> command deletes
the specified NAT port-forwarding rule. See
<xref linkend="natforward"/>.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-guestmemoryballoon">
<title>Change Size of a Virtual Machine's Guest Memory Balloon</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> guestmemoryballoon</command>
command changes the size of the guest memory balloon. The guest
memory balloon is the memory allocated by the &product-name;
Guest Additions from the guest OS and returned to the hypervisor
for reuse by other VMs. The value you specify is in megabytes.
See <xref linkend="guestadd-balloon" />.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-usbattach">
<title>Make a Host System USB Device Visible to a Virtual Machine</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> usbattach</command> command
dynamically attaches a host USB device to the VM, which makes it
visible. You do not need to create a filter.
</para>
<para>
Specify a USB device by its Universally Unique Identifier (UUID)
or by its address on the host system. Use the
<command>VBoxManage list usbhost</command> command to obtain
information about USB devices on the host system.
</para>
<para>
Use the <option>--capturefile</option> option to specify the
absolute path of a file in which to write logging data.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-usbdetach">
<title>Make a Host System USB Device Invisible to a Virtual Machine</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> usbdetach</command> command
dynamically detaches a host USB device from the VM, which makes
it invisible. You do not need to create a filter.
</para>
<para>
Specify a USB device by its UUID or by its address on the host
system. Use the <command>VBoxManage list usbhost</command>
command to obtain information about USB devices on the host
system.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-audioin">
<title>Enable or Disable Audio Capture From the Host System</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> audioin</command> command
specifies whether to enable or disable audio capture from the
host system. Valid values are <literal>on</literal>, which
enables audio capture and <literal>off</literal>, which disables
audio capture. The default value is <literal>off</literal>.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-audioout">
<title>Enable or Disable Audio Playback From a Virtual Machine</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> audioout</command> command
specifies whether to enable or disable audio playback from the
guest VM. Valid values are <literal>on</literal>, which enables
audio playback and <literal>off</literal>, which disables audio
playback. The default value is <literal>off</literal>.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-clipboard-mode">
<title>Specify How to Share the Host OS or Guest OS Clipboard</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> clipboard mode</command> command
specifies how to share the guest or host OS's clipboard with the
host system or VM. Valid values are <literal>disabled</literal>,
<literal>hosttoguest</literal>, <literal>guesttohost</literal>,
and <literal>bidirectional</literal>. The default value is
<literal>disabled</literal>. See
<xref linkend="generalsettings" />.
</para>
<para>
This feature requires that the &product-name; Guest Additions
are installed in the VM.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-clipboard-filetransfers">
<title>Specify If Files Can Be Transferred Through the Clipboard</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> clipboard filetransfers</command>
command specifies if it is possible to transfer files through the
clipboard between the host and VM, in the direction which is allowed.
Valid values are <literal>off</literal> and <literal>on</literal>.
The default value is <literal>off</literal>.
</para>
<para>
This feature requires that the &product-name; Guest Additions
are installed in the VM.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-draganddrop">
<title>Set the Drag and Drop Mode Between the Host System and a Virtual Machine</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> draganddrop</command> command
specifies the current drag and drop mode to use between the host
system and the VM. Valid values are <literal>disabled</literal>,
<literal>hosttoguest</literal>, <literal>guesttohost</literal>,
and <literal>bidirectional</literal>. The default value is
<literal>disabled</literal>. See
<xref linkend="guestadd-dnd" />.
</para>
<para>
This feature requires that the &product-name; Guest Additions
are installed in the VM.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-vrde">
<title>Enable or Disable the VRDE Server</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> vrde</command> command enables
or disables the VirtualBox Remote Desktop Extension (VRDE)
server, if installed. Valid values are <literal>on</literal> and
<literal>off</literal>. The default value is
<literal>off</literal>.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-vrdeport">
<title>Specify VRDE Server Ports</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> vrdeport</command> command
specifies the port or range of ports to which the VRDE server
can bind. The default value is <literal>default</literal> or
<literal>0</literal>, which is the standard RDP port,
<literal>3389</literal>.
</para>
<para>
Also see the <option>--vrde-port</option> option description in
<xref linkend="vboxmanage-modifyvm-vrde" />.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-vrdeproperty">
<title>Specify VRDE Server Port Numbers and IP Addresses</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> vrdeproperty</command> command
specifies the port numbers and IP address on the VM to which the
VRDE server can bind.
</para>
<itemizedlist>
<listitem><para>
<literal>TCP/Ports</literal> specifies a port or a range of
ports to which the VRDE server can bind. The default value
is <literal>default</literal> or <literal>0</literal>, which
is the standard RDP port, <literal>3389</literal>.
</para><para>
Also see the <option>--vrde-port</option> option description
in <xref linkend="vboxmanage-modifyvm-vrde" />.
</para></listitem>
<listitem><para>
<literal>TCP/Address</literal> specifies the IP address of
the host network interface to which the VRDE server binds.
When specified, the server accepts to connect only on the
specified host network interface.
</para><para>
Also see the <option>--vrde-address</option> option
description in <xref linkend="vboxmanage-modifyvm-vrde" />.
</para></listitem>
<listitem><para>
<literal>VideoChannel/Enabled</literal> specifies whether to
enable the VirtualBox Remote Desktop Protocol (VRDP) video
channel. Valid values are <literal>1</literal> to enable the
video channel and <literal>0</literal> to disable the video
channel. The default value is <literal>off</literal>. See
<xref linkend="vrde-videochannel" />.
</para></listitem>
<listitem><para>
<literal>VideoChannel/Quality</literal> specifies the JPEG
compression level on the VRDE server video channel. Valid
values are between 10% and 100%, inclusive. Lower values
mean lower quality but higher compression. The default value
is <literal>100</literal>. See
<xref linkend="vrde-videochannel" />.
</para></listitem>
<listitem><para>
<literal>VideoChannel/DownscaleProtection</literal>
specifies whether to enable the video channel downscale
protection feature. Specify <literal>1</literal> to enable
the feature. This feature is disabled by default.
</para><para>
When enabled, if the video's size equals the shadow buffer
size, the video is shown in full-screen mode. If the video's
size is between full-screen mode and the downscale
threshold, the video is not shown as it might be an
application window that is unreadable when downscaled. When
disabled, the downscale protection feature always attempts
to show videos.
</para></listitem>
<listitem><para>
<literal>Client/DisableDisplay</literal> specifies whether
to disable the VRDE server display feature. Valid values are
<literal>1</literal> to disable the feature and an empty
string (<literal>""</literal>) to enable the feature.
The default value is an empty string. See
<xref linkend="vrde-customization"/>.
</para></listitem>
<listitem><para>
<literal>Client/DisableInput</literal> specifies whether to
disable the VRDE server input feature. Valid values are
<literal>1</literal> to disable the feature and an empty
string (<literal>""</literal>) to enable the feature.
The default value is <literal>1</literal>. See
<xref linkend="vrde-customization"/>.
</para></listitem>
<listitem><para>
<literal>Client/DisableAudio</literal> specifies whether to
disable the VRDE server audio feature. Valid values are
<literal>1</literal> to disable the feature and an empty
string (<literal>""</literal>) to enable the feature.
The default value is <literal>1</literal>. See
<xref linkend="vrde-customization"/>.
</para></listitem>
<listitem><para>
<literal>Client/DisableUSB</literal> specifies whether to
disable the VRDE server USB feature. Valid values are
<literal>1</literal> to disable the feature and an empty
string (<literal>""</literal>) to enable the feature.
The default value is <literal>1</literal>. See
<xref linkend="vrde-customization"/>.
</para></listitem>
<listitem><para>
<literal>Client/DisableClipboard</literal> specifies whether
to disable the VRDE clipboard feature. Valid values are
<literal>1</literal> to disable the feature and an empty
string (<literal>""</literal>) to enable the feature.
To reenable the feature, use
<literal>Client/DisableClipboard=</literal>. The default
value is <literal>1</literal>. See
<xref linkend="vrde-customization"/>.
</para></listitem>
<listitem><para>
<literal>Client/DisableUpstreamAudio</literal> specifies
whether to disable the VRDE upstream audio feature. Valid
values are <literal>1</literal> to disable the feature and
an empty string (<literal>""</literal>) to enable the
feature. To reenable the feature, use
<literal>Client/DisableUpstreamAudio=</literal>. The default
value is <literal>1</literal>. See
<xref linkend="vrde-customization"/>.
</para></listitem>
<listitem><para>
<literal>Client/DisableRDPDR</literal> specifies whether to
disable the RDP Device Redirection For Smart Cards feature
on the VRDE server. Valid values are <literal>1</literal> to
disable the feature and an empty string
(<literal>""</literal>) to enable the feature.
The default value is <literal>1</literal>. See
<xref linkend="vrde-customization"/>.
</para></listitem>
<listitem><para>
<literal>H3DRedirect/Enabled</literal> specifies whether to
enable the VRDE server 3D redirection feature. Valid values
are <literal>1</literal> to enable the feature and an empty
string (<literal>""</literal>) to disable the feature.
See <xref linkend="vrde-customization"/>.
</para></listitem>
<listitem><para>
<literal>Security/Method</literal> specifies the security
method to use for a connection. See
<xref linkend="vrde-crypt" />.
</para><itemizedlist>
<listitem><para>
<literal>Negotiate</literal> accepts both enhanced (TLS)
and standard RDP security connections. The security
method is negotiated with the client. This is the
default value.
</para></listitem>
<listitem><para>
<literal>RDP</literal> accepts only standard RDP
security connections.
</para></listitem>
<listitem><para>
<literal>TLS</literal> accepts only enhanced RDP
security connections. The client must support TLS.
</para></listitem>
</itemizedlist></listitem>
<listitem><para>
<literal>Security/ServerCertificate</literal> specifies the
absolute path of the server certificate to use for a
connection. See <xref linkend="vrde-crypt" />.
</para></listitem>
<listitem><para>
<literal>Security/ServerPrivateKey</literal> specifies the
absolute path of the server private key. See
<xref linkend="vrde-crypt" />.
</para></listitem>
<listitem><para>
<literal>Security/CACertificate</literal> specifies the
absolute path of the CA self-signed certificate. See
<xref linkend="vrde-crypt" />.
</para></listitem>
<listitem><para>
<literal>Audio/RateCorrectionMode</literal> specifies the
rate correction mode to use.
</para><itemizedlist>
<listitem><para>
<literal>VRDP_AUDIO_MODE_VOID</literal> indicates that
no mode is specified. Use this value to unset any audio
mode that is already set.
</para></listitem>
<listitem><para>
<literal>VRDP_AUDIO_MODE_RC</literal> specifies to use
the rate correction mode.
</para></listitem>
<listitem><para>
<literal>VRDP_AUDIO_MODE_LPF</literal> specifies to use
the low pass filter mode.
</para></listitem>
<listitem><para>
<literal>VRDP_AUDIO_MODE_CS</literal> specifies to use
the client sync mode to prevent underflow or overflow of
the client queue.
</para></listitem>
</itemizedlist></listitem>
<listitem><para>
<literal>Audio/LogPath</literal> specifies the absolute path
of the audio log file.
</para></listitem>
</itemizedlist>
</refsect2>
<refsect2 id="vboxmanage-controlvm-vrdevideochannelquality">
<title>Specify the Image Quality for VRDP Video Redirection</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable>
vrdevideochannelquality</command> command sets the image
quality, as a JPEG compression level value, for video
redirection. Valid values are between 10% and 100%, inclusive.
Lower values mean lower quality but higher compression. See
<xref linkend="vrde-videochannel" />.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-setvideomodehint">
<title>Specify the Video Mode for the Guest VM</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> setvideomodehint</command>
command specifies the video mode for the guest VM to use. You
must have the &product-name; Guest Additions installed. Note
that this feature does not work for all guest systems.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-setscreenlayout">
<title>Specify the Screen Layout for a Display on the Guest VM</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> setscreenlayout</command>
command can be used to configure multiscreen displays. The
specified screen on the guest VM can be enabled or disabled, or
a custom screen layout can be configured.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-screenshotpng">
<title>Take a Screen Shot of the Virtual Machine Display</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> screenshotpng</command>
command takes a screenshot of the guest display and saves it as
PNG in the specified file.
</para>
<itemizedlist>
<listitem><para>
<replaceable>filename</replaceable> specifies the name of
the PNG file to create.
</para></listitem>
<listitem><para>
<replaceable>display</replaceable> specifies the display
number for the screen shot. For a single monitor guest
display, this is <literal>0</literal>.
</para></listitem>
</itemizedlist>
</refsect2>
<refsect2 id="vboxmanage-controlvm-recording">
<title>Enable or Disable the Recording of a Virtual Machine Session</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> recording</command> command
enables or disables the recording of a VM session into a
WebM/VP8 file. Valid values are <literal>on</literal>, which
begins recording when the VM session starts and
<literal>off</literal>, which disables recording. The default
value is <literal>off</literal>.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-recording-screens">
<title>Specify the Virtual Machine Screens to Record</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> recording screens</command>
command enables you to specify which VM screens to record. The
recording for each screen that you specify is saved to its own
file in the machine folder. You cannot modify this setting while
recording is enabled.
</para>
<itemizedlist>
<listitem><para>
<literal>all</literal> specifies that you record all VM
screens.
</para></listitem>
<listitem><para>
<literal>none</literal> specifies that you do not record any
VM screens.
</para></listitem>
<listitem><para>
<replaceable>screen-ID</replaceable> specifies one or more
VM screens to record.
</para></listitem>
</itemizedlist>
</refsect2>
<refsect2 id="vboxmanage-controlvm-recording-filename">
<title>Specify the File in Which to Save Virtual Machine Recording</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> recording filename</command>
command specifies the file in which to save the recording. You
cannot modify this setting while recording is enabled.
</para>
<para>
The default setting is to store a recording in the machine
folder, using the VM name as the file name, with a
<filename>webm</filename> file name extension.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-recording-videores">
<title>Specify the Resolution of the Recorded Video</title>
<remark role="help-copy-synopsis"/>
<para>
<command>VBoxManage controlvm <replaceable>vmname</replaceable>
recording videores</command> command specifies the resolution of
the recorded video in pixels. You cannot modify this setting
while recording is enabled.
</para>
<para>
Use the Settings tool to view the video recording settings,
which are based on the resolution (frame size). See the Frame
Size field on the Recording tab of the Display page to view the
default value.
</para>
<para>
Specify the resolution as
<replaceable>width</replaceable><literal>x</literal><replaceable>height</replaceable>:
</para>
<itemizedlist>
<listitem><para>
<replaceable>width</replaceable> specifies the width in
pixels.
</para></listitem>
<listitem><para>
<replaceable>height</replaceable> specifies the height in
pixels.
</para></listitem>
</itemizedlist>
</refsect2>
<refsect2 id="vboxmanage-controlvm-recording-videorate">
<title>Specify the Bit Rate of the Video</title>
<remark role="help-copy-synopsis"/>
<!-- @todo r=andy Clarify rate. -->
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> recording videorate</command>
command specifies the bit rate,
<replaceable>bit-rate</replaceable>, of the video in kilobits
per second. Increasing this value improves the appearance of the
video at the cost of an increased file size. You cannot modify
this setting while recording is enabled.
</para>
<para>
Use the Settings tool to view the video recording settings,
which are based on the frame size. See the Video Quality field
on the Recording tab of the Display page to view the default
value.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-recording-videofps">
<title>Specify the Maximum Frequency of the Video</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> recording videofps</command>
command specifies the maximum frequency of the video to record.
Video frequency is measured in frames per second (FPS). The
recording skips any frames that have a frequency higher than the
specified maximum. Increasing the frequency reduces the number
of skipped frames and increases the file size. You cannot modify
this setting while recording is enabled.
</para>
<para>
Use the Settings tool to view the video recording settings,
which are based on the frame size. See the Frame Rate field on
the Recording tab of the Display page to view the default value.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-recording-maxtime">
<title>Specify the Maximum Amount of Time to Record Video</title>
<remark role="help-copy-synopsis"/>
<!-- @todo r=andy Clarify time format. -->
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> recording maxtime</command>
command specifies the maximum amount time to record in seconds.
The recording stops after the specified number of seconds
elapses. If this value is zero, the recording continues until
you stop the recording.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-recording-maxfilesize">
<title>Specify the Maximum Size of the Recorded Video</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> recording
maxfilesize</command> command specifies the maximum size of the
recorded video file in megabytes. The recording stops when the
file reaches the specified size. If this value is zero, the
recording continues until you stop the recording. You cannot
modify this setting while recording is enabled.
</para>
</refsect2>
<!--
<refsect2 id="vboxmanage-controlvm-recording-opts">
<title>Specify Custom Options for Recording Video and/or Audio</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> recording
opts</command> command specifies additional recording options
in a comma-separated keyword-value format. For example,
<computeroutput>foo=bar,a=b</computeroutput>. You cannot
modify this setting while recording is enabled.
</para>
<para>
Use this option if you are an advanced user only. For
information about keywords, see <emphasis>&product-name;
Programming Guide and Reference</emphasis>.
</para>
</refsect2>
-->
<refsect2 id="vboxmanage-controlvm-setcredentials">
<title>Specify Credentials for Remote Logins on Windows Virtual Machines</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>setcredentials</command> command enables you to
specify the credentials for remotely logging in to Windows VMs.
See <xref linkend="autologon" />.
</para>
<itemizedlist>
<listitem><para>
<replaceable>username</replaceable> specifies the user name
with which to log in to the Windows VM.
</para></listitem>
<listitem><para>
<option>--passwordfile=<replaceable>filename</replaceable></option>
specifies the file from which to obtain the password for
<replaceable>username</replaceable>.
</para><para>
The <option>--passwordfile</option> is mutually exclusive
with the <option>--password</option> option.
</para></listitem>
<listitem><para>
<option>--password=<replaceable>password</replaceable></option>
specifies the password for
<replaceable>username</replaceable>.
</para><remark>
This design does not conform to Oracle's security
guidelines. You should not be able to specify a password on
the command line because the password can be seen in a
process listing.
</remark><para>
The <option>--password</option> is mutually exclusive with
the <option>--passwordfile</option> option.
</para></listitem>
<listitem><para>
<option>--allowlocallogin</option> specifies whether to
enable or disable local logins. Valid values are
<literal>on</literal> to enable local logins and
<literal>off</literal> to disable local logins.
</para></listitem>
</itemizedlist>
</refsect2>
<refsect2 id="vboxmanage-controlvm-teleport">
<title>Configure a Virtual Machine Target for Teleporting</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> teleport</command> command
initiates a teleporting operation between the specified VM and
the specified host system. See <xref linkend="teleporting" />.
</para>
<para>
If you specify a password, it must match the password you
specified when you issued the <command>VBoxManage
modifyvm</command> command for the target machine.
</para>
<variablelist>
<varlistentry>
<term><option>--host=<replaceable>hostname</replaceable></option></term>
<listitem><para>
Specifies the name of the VM.
</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--port=<replaceable>port</replaceable></option></term>
<listitem><para>
Specifies the port on the VM that should listen for a
teleporting request from other VMs. The port number can be
any free TCP/IP port number, such as
<literal>6000</literal>.
</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--maxdowntime=<replaceable>msec</replaceable></option></term>
<listitem><para>
Specifies the maximum downtime, in milliseconds, for the
teleporting target VM.
</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--password=<replaceable>password</replaceable></option></term>
<listitem><para>
Specifies the password that the source machine uses for
the teleporting request. The request succeeds only if the
source machine specifies the same password.
</para><remark>
This design does not conform to Oracle's security
guidelines. You should not be able to specify a password
on the command line because the password can be seen in a
process listing.
</remark><para>
The <option>--password</option> is mutually exclusive with
the <option>--passwordfile</option> option.
</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--passwordfile=<replaceable>filename</replaceable></option></term>
<listitem><para>
Specifies the file from which to obtain the password that
the source machine uses for the teleporting request. The
request succeeds only if the source machine specifies the
same password.
</para><para>
When you specify a file name of <literal>stdin</literal>,
you can read the password from standard input.
</para><para>
The <option>--passwordfile</option> is mutually exclusive
with the <option>--password</option> option.
</para></listitem>
</varlistentry>
</variablelist>
</refsect2>
<refsect2 id="vboxmanage-controlvm-plugcpu">
<title>Add a Virtual CPU to a Virtual Machine</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> plugcpu</command> command adds
a virtual CPU to the specified VM if CPU hot-plugging is
enabled. <replaceable>ID</replaceable> specifies the index of
the virtual CPU to be added and must be a number from 0 to the
maximum number of CPUs configured.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-unplugcpu">
<title>Remove a Virtual CPU From a Virtual Machine</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> unplugcpu</command> command
removes a virtual CPU from the specified VM if CPU hot-plugging
is enabled. <replaceable>ID</replaceable> specifies the index of
the virtual CPU to be removed and must be a number from 0 to the
maximum number of CPUs configured. You cannot remove CPU 0.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-cpuexecutioncap">
<title>Set the Maximum Amount of Physical CPU Time Used by a Virtual CPU</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> cpuexecutioncap</command>
command specifies how the maximum amount of physical CPU time
used by a virtual CPU. Valid values are a percentage between
<literal>1</literal> and <literal>100</literal>. A value of
<literal>50</literal> specifies that a single virtual CPU can
use up to 50% of a physical CPU. The default value is
<literal>100</literal>.
</para>
<para>
Use this feature with caution, it can have unexpected results
including timekeeping problems and lower performance than
specified. If you want to limit the resource usage of a VM
it is more reliable to pick an appropriate number of VCPUs.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-vm-process-priority">
<title>Change the Priority of a VM Process</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> vm-process-priority</command>
command specifies the priority scheme of the VM process to use
when starting the specified VM and while the VM runs.
</para>
<para>
Valid values are:
</para>
<itemizedlist>
<listitem><para>
<literal>default</literal> &ndash; Default process
priority determined by the OS.
</para></listitem>
<listitem><para>
<literal>flat</literal> &ndash; Assumes a scheduling
policy which puts the process at the default priority
and with all threads at the same priority.
</para></listitem>
<listitem><para>
<literal>low</literal> &ndash; Assumes a scheduling
policy which puts the process mostly below the default
priority of the host OS.
</para></listitem>
<listitem><para>
<literal>normal</literal> &ndash; Assume a scheduling
policy which shares the CPU resources fairly with
other processes running with the default priority of
the host OS.
</para></listitem>
<listitem><para>
<literal>high</literal> &ndash; Assumes a scheduling
policy which puts the task above the default priority of
the host OS. This policy might easily cause other tasks
in the system to starve.
</para></listitem>
</itemizedlist>
</refsect2>
<refsect2 id="vboxmanage-controlvm-webcam-attach">
<title>Attach a Webcam to a Virtual Machine</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> webcam attach</command>
command attaches a webcam to a running VM. Specify the webcam as
the absolute path of the webcam on the host OS or as an alias.
Use the <command>VBoxManage list webcams</command> command to
obtain the webcam alias.
</para>
<para>
Note that the <literal>.0</literal> alias is the default video
input device on the host OS. <literal>.1</literal> is the first
video input device, <literal>.2</literal> is the second video
input device, and so on. The order of the devices is specific to
the host system.
</para>
<para>
You can specify optional settings in the form of
semi-colon-separated (<literal>;</literal>) name-value pairs.
These properties enable you to configure the emulated webcam
device.
</para>
<para>
The following settings are supported:
</para>
<variablelist>
<varlistentry>
<term><literal>MaxFramerate</literal></term>
<listitem><para>
Specifies the highest rate at which to send video frames
to the VM. The rate is in frames per second. Higher frame
rates increase CPU load, so you can use this setting to
reduce CPU load. The default value is <literal>no maximum
limit</literal>. This value enables the VM to use any
frame rate supported by the webcam.
</para></listitem>
</varlistentry>
<varlistentry>
<term><literal>MaxPayloadTransferSize</literal></term>
<listitem><para>
Specifies the maximum number of bytes that the VM receives
from the emulated webcam in one buffer. The default
setting is <literal>3060</literal> bytes, which is used by
some webcams. If the VM is able to use larger buffers,
higher values might reduce CPU load slightly. Note that
some guest OSes might not suppport higher
<literal>MaxPayloadTransferSize</literal> values.
</para></listitem>
</varlistentry>
</variablelist>
</refsect2>
<refsect2 id="vboxmanage-controlvm-webcam-detach">
<title>Detach a Webcam From a Virtual Machine</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> webcam detach</command>
command detaches a webcam from a running VM. Specify the webcam
as the absolute path of the webcam on the host OS or as an
alias. Use the <command>VBoxManage list webcams</command> to
obtain the webcam alias.
</para>
<para>
When a webcam device is detached from the host, the host OS
determines how the emulated webcam behaves.
</para>
<itemizedlist>
<listitem><para>
<emphasis role="bold">Windows hosts:</emphasis> The emulated
webcam device is detached from the VM automatically.
</para></listitem>
<listitem><para>
<emphasis role="bold">Mac OS X hosts that run at least OS X
10.7:</emphasis> The emulated webcam device remains attached
to the VM and you must detach it manually by using the
<command>VBoxManage controlvm webcam detach</command>
command.
</para></listitem>
<listitem><para>
<emphasis role="bold">Linux hosts:</emphasis> The emulated
webcam device is detached from the VM automatically only if
the webcam is actively streaming video. If the emulated
webcam is inactive, manually detach it by using the
<command>VBoxManage controlvm
<replaceable>vmname</replaceable> webcam detach</command>
command.
</para></listitem>
</itemizedlist>
</refsect2>
<refsect2 id="vboxmanage-controlvm-webcam-list">
<title>List the Webcams Attached to a Virtual Machine</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> webcam list</command> command
lists webcams that are attached to the running VM. The output
shows a list of absolute paths or aliases that attached the
webcams to the VM by using the <command>VBoxManage controlvm
<replaceable>vmname</replaceable> webcam attach</command>
command.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-addencpassword">
<title>Set an Encryption Password for a Virtual Machine</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> addencpassword</command>
command provides the <replaceable>vmname</replaceable> encrypted
VM with the encryption password to enable a headless start.
Specify the absolute path of a password file on the host system.
If <replaceable>filename</replaceable> is <literal>-</literal>,
<command>VBoxManage</command> prompts for the encryption
password.
</para>
<para>
Use the <option>--removeonsuspend</option> option to specify
whether to save the passsword or clear it from VM memory when
the VM is suspended.
</para>
<para>
If the VM is suspended and the password is cleared, use the
<command>VBoxManage controlvm <replaceable>vmname</replaceable>
addencpassword</command> to provide the password to resume
execution on the VM. Use this feature when you do not want to
store the password in VM memory while the VM is suspended by a
host suspend event.
</para>
<note>
<para>
You can encrypt data stored on hard disk images used by the
VM. &product-name; uses the AES algorithm in XTS mode and
supports 128-bit or 256-bit data encryption keys (DEK). The
encrypted DEK is stored in the medium properties and is
decrypted during VM startup when you provide the encryption
password.
</para>
</note>
<para>
Use the <command>VBoxManage encryptmedium</command> command to
create a DEK encrypted medium. See
<xref linkend="diskencryption-encryption" />.
</para>
<para>
The &product-name; GUI prompts you for the encryption password
when you start an encrypted VM.
</para>
<para>
Use the following command to perform a headless start of an
encrypted VM:
</para>
<screen>
$ VBoxManage startvm <replaceable>vmname</replaceable> --type headless
</screen>
<para>
Then, use the following command to provide the encryption
password:
</para>
<screen>
$ VBoxManage <replaceable>vmname</replaceable> controlvm addencpassword <replaceable>vmname</replaceable> -
Password: <replaceable>encryption-password</replaceable>
</screen>
</refsect2>
<refsect2 id="vboxmanage-controlvm-removeencpassword">
<title>Disable an Encryption Password for a Virtual Machine</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> removeencpassword</command>
command disables a specific encryption password for all
encrypted media attached to the VM.
</para>
<para>
<replaceable>ID</replaceable> is the password identifier for the
encryption password that you want to disable.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-removeallencpasswords">
<title>Disable All Encryption Passwords for a Virtual Machine</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable>
removeallencpasswords</command> command disables all encryption
passwords for all encrypted media attached to the VM.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-changeuartmode">
<title>Change the Connection Mode for a Virtual Serial Port on a Virtual
Machine</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> changeuartmode</command>
command changes the connection mode for the specified virtual
serial port. Valid serial port values are integers that start
from <literal>1</literal>.
</para>
<variablelist>
<varlistentry>
<term>disconnected</term>
<listitem><para>
Disconnects the device.
</para></listitem>
</varlistentry>
<varlistentry>
<term>server <replaceable>pipe-name</replaceable></term>
<listitem><para>
Specifies the pipe name of the server.
</para></listitem>
</varlistentry>
<varlistentry>
<term>client <replaceable>pipe-name</replaceable></term>
<listitem><para>
Specifies the pipe name of the client.
</para></listitem>
</varlistentry>
<varlistentry>
<term>tcpserver <replaceable>port</replaceable></term>
<listitem><para>
Specifies the port number of the TCP server.
</para></listitem>
</varlistentry>
<varlistentry>
<term>tcpclient <replaceable>hostname</replaceable>:<replaceable>port</replaceable></term>
<listitem><para>
Specifies the host name and port number of the TCP client.
</para></listitem>
</varlistentry>
<varlistentry>
<term>file <replaceable>filename</replaceable></term>
<listitem><para>
Specifies the name of the file.
</para></listitem>
</varlistentry>
<varlistentry>
<term><replaceable>device-name</replaceable></term>
<listitem><para>
Specifies the name of the device.
</para></listitem>
</varlistentry>
</variablelist>
</refsect2>
<refsect2 id="vboxmanage-controlvm-autostart-enabled">
<title>Enabling autostart the VM during host system boot</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> autostart-enabled</command>
command specifies whether to enable or disable automatically
start the VM at host system boot-up. You must do some host
system configuration before you can use this feature.
See <xref linkend="autostart" />. Valid values are
<literal>on</literal>, which enables autostart feature for
the VM and <literal>off</literal>, which disables it. The
default value is <literal>off</literal>.
</para>
</refsect2>
<refsect2 id="vboxmanage-controlvm-autostart-delay">
<title>Setting the delay of starting the VM on host system boot</title>
<remark role="help-copy-synopsis"/>
<para>
The <command>VBoxManage controlvm
<replaceable>vmname</replaceable> autostart-delay</command>
command specifies the delay in seconds before the VM starts
on host system boot-up. See <xref linkend="autostart" />.
</para>
</refsect2>
</refsect1>
<refsect1>
<title>Examples</title>
<remark role="help-scope" condition="GLOBAL" />
<para>
The following command temporarily stops the execution of the
<filename>ol7</filename> VM.
</para>
<screen>$ VBoxManage controlvm ol7 pause</screen>
<para>
The following command configures shared clipboard operation for
the <filename>ol7</filename> VM. Copying of clipboard data is
allowed in both directions between the host and guest.
</para>
<screen>$ VBoxManage controlvm ol7 clipboard mode bidirectional</screen>
</refsect1>
<refsect1>
<title>See Also</title>
<para>
<xref linkend="vboxmanage-list" />,
<xref linkend="vboxmanage-modifyvm" />,
<xref linkend="vboxmanage-startvm" />
</para>
</refsect1>
</refentry>