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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 14:30:35 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 14:30:35 +0000
commit378c18e5f024ac5a8aef4cb40d7c9aa9633d144c (patch)
tree44dfb6ca500d32cabd450649b322a42e70a30683 /login-utils/sulogin.8
parentInitial commit. (diff)
downloadutil-linux-upstream.tar.xz
util-linux-upstream.zip
Adding upstream version 2.38.1.upstream/2.38.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'login-utils/sulogin.8')
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1 files changed, 89 insertions, 0 deletions
diff --git a/login-utils/sulogin.8 b/login-utils/sulogin.8
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+'\" t
+.\" Title: sulogin
+.\" Author: [see the "AUTHOR(S)" section]
+.\" Generator: Asciidoctor 2.0.15
+.\" Date: 2022-05-11
+.\" Manual: System Administration
+.\" Source: util-linux 2.38.1
+.\" Language: English
+.\"
+.TH "SULOGIN" "8" "2022-05-11" "util\-linux 2.38.1" "System Administration"
+.ie \n(.g .ds Aq \(aq
+.el .ds Aq '
+.ss \n[.ss] 0
+.nh
+.ad l
+.de URL
+\fI\\$2\fP <\\$1>\\$3
+..
+.als MTO URL
+.if \n[.g] \{\
+. mso www.tmac
+. am URL
+. ad l
+. .
+. am MTO
+. ad l
+. .
+. LINKSTYLE blue R < >
+.\}
+.SH "NAME"
+sulogin \- single\-user login
+.SH "SYNOPSIS"
+.sp
+\fBsulogin\fP [options] [\fItty\fP]
+.SH "DESCRIPTION"
+.sp
+\fBsulogin\fP is invoked by \fBinit\fP when the system goes into single\-user mode.
+.sp
+The user is prompted:
+.sp
+Give root password for system maintenance (or type Control\-D for normal startup):
+.sp
+If the root account is locked and \fB\-\-force\fP is specified, no password is required.
+.sp
+\fBsulogin\fP will be connected to the current terminal, or to the optional \fItty\fP device that can be specified on the command line (typically \fI/dev/console\fP).
+.sp
+When the user exits from the single\-user shell, or presses control\-D at the prompt, the system will continue to boot.
+.SH "OPTIONS"
+.sp
+\fB\-e\fP, \fB\-\-force\fP
+.RS 4
+If the default method of obtaining the root password from the system via \fBgetpwnam\fP(3) fails, then examine \fI/etc/passwd\fP and \fI/etc/shadow\fP to get the password. If these files are damaged or nonexistent, or when root account is locked by \(aq!\(aq or \(aq*\(aq at the begin of the password then \fBsulogin\fP will \fBstart a root shell without asking for a password\fP.
+.sp
+Only use the \fB\-e\fP option if you are sure the console is physically protected against unauthorized access.
+.RE
+.sp
+\fB\-p\fP, \fB\-\-login\-shell\fP
+.RS 4
+Specifying this option causes \fBsulogin\fP to start the shell process as a login shell.
+.RE
+.sp
+\fB\-t\fP, \fB\-\-timeout\fP \fIseconds\fP
+.RS 4
+Specify the maximum amount of time to wait for user input. By default, \fBsulogin\fP will wait forever.
+.RE
+.sp
+\fB\-h\fP, \fB\-\-help\fP
+.RS 4
+Display help text and exit.
+.RE
+.sp
+\fB\-V\fP, \fB\-\-version\fP
+.RS 4
+Print version and exit.
+.RE
+.SH "ENVIRONMENT"
+.sp
+\fBsulogin\fP looks for the environment variable \fBSUSHELL\fP or \fBsushell\fP to determine what shell to start. If the environment variable is not set, it will try to execute root\(cqs shell from \fI/etc/passwd\fP. If that fails, it will fall back to \fI/bin/sh\fP.
+.SH "AUTHORS"
+.sp
+\fBsulogin\fP was written by Miquel van Smoorenburg for sysvinit and later ported to util\-linux by Dave Reisner and Karel Zak.
+.SH "REPORTING BUGS"
+.sp
+For bug reports, use the issue tracker at \c
+.URL "https://github.com/util\-linux/util\-linux/issues" "" "."
+.SH "AVAILABILITY"
+.sp
+The \fBsulogin\fP command is part of the util\-linux package which can be downloaded from \c
+.URL "https://www.kernel.org/pub/linux/utils/util\-linux/" "Linux Kernel Archive" "." \ No newline at end of file