|
HTML rendering created 2026-01-16 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
|
|
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | CONFIGURATION | FILES | SEE ALSO | COLOPHON |
|
|
|
SG(1) User Commands SG(1)
sg - execute command as different group ID
sg [-] group [[-c] command]
The sg command works similar to newgrp but accepts a command. The
command will be executed with the /bin/sh shell. With most shells
you may run sg from, you need to enclose multi-word commands in
quotes. Another difference between newgrp and sg is that some
shells treat newgrp specially, replacing themselves with a new
instance of a shell that newgrp creates. This doesn't happen with
sg, so upon exit from an sg command you are returned to your
previous group ID.
The options which apply to the sg command are:
-, -l
Start the shell as a login shell.
-c
Specify a command that will be invoked by the shell using its
-c.
This is the default; for backward compatibility.
The following configuration variables in /etc/login.defs change
the behavior of this tool:
SYSLOG_SG_ENAB (boolean)
Enable "syslog" logging of sg activity.
/etc/passwd
User account information.
/etc/shadow
Secure user account information.
/etc/group
Group account information.
/etc/gshadow
Secure group account information.
id(1), login(1), newgrp(1), su(1), gpasswd(1), group(5),
gshadow(5).
This page is part of the shadow-utils (utilities for managing
accounts and shadow password files) project. Information about
the project can be found at
⟨https://github.com/shadow-maint/shadow⟩. If you have a bug report
for this manual page, send it to
pkg-shadow-devel@alioth-lists.debian.net. This page was obtained
from the tarball shadow-4.19.0.tar fetched from
⟨https://github.com/shadow-maint/shadow/releases⟩ on 2026-01-16.
If you discover any rendering problems in this HTML version of the
page, or you believe there is a better or more up-to-date source
for the page, or you have corrections or improvements to the
information in this COLOPHON (which is not part of the original
manual page), send a mail to man-pages@man7.org
shadow-utils 4.19.0 01/16/2026 SG(1)
Pages that refer to this page: newgrp(1), su(1@@shadow-utils), group(5), credentials(7)
|
HTML rendering created 2026-01-16 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
|