sg(1) - Linux man page

Name

sg - execute command as different group ID

Synopsis

sg [-] [group [-c ] command]

Description

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.

Configuration

The following configuration variables in /etc/login.defs change the behavior of this tool:

SYSLOG_SG_ENAB (boolean)

Enable "syslog" logging of sg activity.

Files

/etc/passwd

User account information. /etc/shadow Secure user account information. /etc/group Group account information. /etc/gshadow Secure group account information.

See Also

id(1), login(1), newgrp(1), su(1), gpasswd(1), group(5), gshadow(5).