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 ⟨https://github.com/shadow-maint/shadow⟩. If you have a bug report for this manual page, send it to email@example.com. This page was obtained from the project's upstream Git repository ⟨https://github.com/shadow-maint/shadow⟩ on 2020-06-09. (At that time, the date of the most recent commit that was found in the repos‐ itory was 2020-06-08.) 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 firstname.lastname@example.org shadow-utils 4.6 06/09/2020 SG(1)
Pages that refer to this page: newgrp(1), su(1@@shadow-utils), group(5), credentials(7)