116 lines
2.7 KiB
Groff
116 lines
2.7 KiB
Groff
'\" t
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.\" Title: sg
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.\" Author: Julianne Frances Haugh
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.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
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.\" Date: 02/01/2026
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.\" Manual: User Commands
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.\" Source: shadow-utils 4.19.3
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.\" Language: English
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.\"
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.TH "SG" "1" "02/01/2026" "shadow\-utils 4\&.19\&.3" "User Commands"
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.\" -----------------------------------------------------------------
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.\" * Define some portability stuff
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.\" -----------------------------------------------------------------
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.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.\" http://bugs.debian.org/507673
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.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
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.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.ie \n(.g .ds Aq \(aq
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.el .ds Aq '
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.\" -----------------------------------------------------------------
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.\" * set default formatting
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.\" -----------------------------------------------------------------
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.\" disable hyphenation
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.nh
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.\" disable justification (adjust text to left margin only)
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.ad l
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.\" -----------------------------------------------------------------
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.\" * MAIN CONTENT STARTS HERE *
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.\" -----------------------------------------------------------------
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.SH "NAME"
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sg \- execute command as different group ID
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.SH "SYNOPSIS"
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.HP \w'\fBsg\fR\ 'u
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\fBsg\fR [\fI\-\fR] \fIgroup\fR [[\fI\-c\fR]\ \fIcommand\fR]
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.SH "DESCRIPTION"
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.PP
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The
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\fBsg\fR
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command works similar to
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\fBnewgrp\fR
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but accepts a command\&. The command will be executed with the
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/bin/sh
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shell\&. With most shells you may run
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\fBsg\fR
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from, you need to enclose multi\-word commands in quotes\&. Another difference between
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\fBnewgrp\fR
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and
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\fBsg\fR
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is that some shells treat
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\fBnewgrp\fR
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specially, replacing themselves with a new instance of a shell that
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\fBnewgrp\fR
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creates\&. This doesn\*(Aqt happen with
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\fBsg\fR, so upon exit from an
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\fBsg\fR
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command you are returned to your previous group ID\&.
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.SH "OPTIONS"
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.PP
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The options which apply to the
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\fBsg\fR
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command are:
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.PP
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\fB\-\fR, \fB\-l\fR
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.RS 4
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Start the shell as a login shell\&.
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.RE
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.PP
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\fB\-c\fR
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.RS 4
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Specify a command that will be invoked by the shell using its
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\fB\-c\fR\&.
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.sp
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This is the default; for backward compatibility\&.
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.RE
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.SH "CONFIGURATION"
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.PP
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The following configuration variables in
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/etc/login\&.defs
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change the behavior of this tool:
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.PP
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\fBSYSLOG_SG_ENAB\fR (boolean)
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.RS 4
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Enable "syslog" logging of
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\fBsg\fR
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activity\&.
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.RE
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.SH "FILES"
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.PP
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/etc/passwd
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.RS 4
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User account information\&.
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.RE
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.PP
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/etc/shadow
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.RS 4
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Secure user account information\&.
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.RE
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.PP
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/etc/group
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.RS 4
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Group account information\&.
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.RE
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.PP
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/etc/gshadow
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.RS 4
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Secure group account information\&.
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.RE
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.SH "SEE ALSO"
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.PP
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\fBid\fR(1),
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\fBlogin\fR(1),
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\fBnewgrp\fR(1),
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\fBsu\fR(1),
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\fBgpasswd\fR(1),
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\fBgroup\fR(5), \fBgshadow\fR(5)\&.
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