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diff --git a/man/systemd-escape.xml b/man/systemd-escape.xml new file mode 100644 index 0000000..4e4130f --- /dev/null +++ b/man/systemd-escape.xml @@ -0,0 +1,198 @@ +<?xml version='1.0'?> <!--*-nxml-*--> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" + "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> +<!-- SPDX-License-Identifier: LGPL-2.1-or-later --> + +<refentry id="systemd-escape" + xmlns:xi="http://www.w3.org/2001/XInclude"> + + <refentryinfo> + <title>systemd-escape</title> + <productname>systemd</productname> + </refentryinfo> + + <refmeta> + <refentrytitle>systemd-escape</refentrytitle> + <manvolnum>1</manvolnum> + </refmeta> + + <refnamediv> + <refname>systemd-escape</refname> + <refpurpose>Escape strings for usage in systemd unit names</refpurpose> + </refnamediv> + + <refsynopsisdiv> + <cmdsynopsis> + <command>systemd-escape</command> + <arg choice="opt" rep="repeat">OPTIONS</arg> + <arg choice="opt" rep="repeat">STRING</arg> + </cmdsynopsis> + </refsynopsisdiv> + + <refsect1> + <title>Description</title> + + <para><command>systemd-escape</command> may be used to escape + strings for inclusion in systemd unit names. The command may be + used to escape and to undo escaping of strings.</para> + + <para>The command takes any number of strings on the command line, + and will process them individually, one after another. It will + output them separated by spaces to stdout.</para> + + <para>By default, this command will escape the strings passed, + unless <option>--unescape</option> is passed which results in the + inverse operation being applied. If <option>--mangle</option> is given, a + special mode of escaping is applied instead, which assumes the + string is already escaped but will escape everything that + appears obviously non-escaped.</para> + + <para>For details on the escaping and unescaping algorithms see the relevant section in + <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para> + </refsect1> + + <refsect1> + <title>Options</title> + + <para>The following options are understood:</para> + + <variablelist> + <varlistentry> + <term><option>--suffix=</option></term> + + <listitem><para>Appends the specified unit type suffix to the + escaped string. Takes one of the unit types supported by + systemd, such as <literal>service</literal> or + <literal>mount</literal>. May not be used in conjunction with + <option>--template=</option>, <option>--unescape</option> or + <option>--mangle</option>.</para> + + <xi:include href="version-info.xml" xpointer="v216"/></listitem> + </varlistentry> + + <varlistentry> + <term><option>--template=</option></term> + + <listitem><para>Inserts the escaped strings in a unit name + template. Takes a unit name template such as + <filename>foobar@.service</filename>. With + <option>--unescape</option>, expects instantiated unit names + for this template and extracts and unescapes just the instance + part. May not be used in conjunction with + <option>--suffix=</option>, + <option>--instance</option> or + <option>--mangle</option>.</para> + + <xi:include href="version-info.xml" xpointer="v216"/></listitem> + </varlistentry> + + <varlistentry> + <term><option>--path</option></term> + <term><option>-p</option></term> + + <listitem><para>When escaping or unescaping a string, assume it refers to a file system path. This + simplifies the path (leading, trailing, and duplicate <literal>/</literal> characters are removed, + no-op path <literal>.</literal> components are removed, and for absolute paths, leading + <literal>..</literal> components are removed). After the simplification, the path must not contain + <literal>..</literal>.</para> + + <para>This is particularly useful for generating strings suitable for unescaping with the + <literal>%f</literal> specifier in unit files, see + <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>. + </para> + + <xi:include href="version-info.xml" xpointer="v216"/></listitem> + </varlistentry> + + <varlistentry> + <term><option>--unescape</option></term> + <term><option>-u</option></term> + + <listitem><para>Instead of escaping the specified strings, + undo the escaping, reversing the operation. May not be used in + conjunction with <option>--suffix=</option> or + <option>--mangle</option>.</para> + + <xi:include href="version-info.xml" xpointer="v216"/></listitem> + </varlistentry> + + <varlistentry> + <term><option>--mangle</option></term> + <term><option>-m</option></term> + + <listitem><para>Like <option>--escape</option>, but only + escape characters that are obviously not escaped yet, and + possibly automatically append an appropriate unit type suffix + to the string. May not be used in conjunction with + <option>--suffix=</option>, <option>--template=</option> or + <option>--unescape</option>.</para> + + <xi:include href="version-info.xml" xpointer="v216"/></listitem> + </varlistentry> + + <varlistentry> + <term><option>--instance</option></term> + + <listitem><para>With <option>--unescape</option>, unescape + and print only the instance part of an instantiated unit name + template. Results in an error for an uninstantiated template + like <filename>ssh@.service</filename> or a non-template name + like <filename>ssh.service</filename>. + Must be used in conjunction with <option>--unescape</option> + and may not be used in conjunction with + <option>--template</option>.</para> + + <xi:include href="version-info.xml" xpointer="v240"/></listitem> + </varlistentry> + + <xi:include href="standard-options.xml" xpointer="help" /> + <xi:include href="standard-options.xml" xpointer="version" /> + </variablelist> + + </refsect1> + + <refsect1> + <title>Examples</title> + + <para>To escape a single string:</para> + <programlisting>$ systemd-escape 'Hallöchen, Meister' +Hall\xc3\xb6chen\x2c\x20Meister</programlisting> + + <para>To undo escaping on a single string:</para> + <programlisting>$ systemd-escape -u 'Hall\xc3\xb6chen\x2c\x20Meister' +Hallöchen, Meister</programlisting> + + <para>To generate the mount unit for a path:</para> + <programlisting>$ systemd-escape -p --suffix=mount "/tmp//waldi/foobar/" +tmp-waldi-foobar.mount</programlisting> + + <para>To generate instance names of three strings:</para> + <programlisting>$ systemd-escape --template=systemd-nspawn@.service 'My Container 1' 'containerb' 'container/III' +systemd-nspawn@My\x20Container\x201.service systemd-nspawn@containerb.service systemd-nspawn@container-III.service</programlisting> + + <para>To extract the instance part of an instantiated unit:</para> + <programlisting>$ systemd-escape -u --instance 'systemd-nspawn@My\x20Container\x201.service' +My Container 1</programlisting> + + <para>To extract the instance part of an instance of a particular template:</para> + <programlisting>$ systemd-escape -u --template=systemd-nspawn@.service 'systemd-nspawn@My\x20Container\x201.service' +My Container 1</programlisting> + </refsect1> + + <refsect1> + <title>Exit status</title> + + <para>On success, 0 is returned, a non-zero failure code + otherwise.</para> + </refsect1> + + <refsect1> + <title>See Also</title> + <para> + <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, + <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>, + <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry> + </para> + </refsect1> + +</refentry> |