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 a sg command you are returned to your previous group ID.
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 ⟨http://pkg-shadow.alioth.debian.org/⟩. If you have a bug report for this manual page, see ⟨http://pkg-shadow.alioth.debian.org/getinvolved.php⟩. This page was obtained from the project's upstream Git repository ⟨git://anonscm.debian.org/git/pkg-shadow/shadow.git⟩ on 2017-04-25. 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 email@example.com shadow-utils 4.4 04/25/2017 SG(1)
Pages that refer to this page: newgrp(1), su(1@@shadow-utils), group(5), credentials(7)