sg
execute command as different group ID
see also :
id - login - newgrp - su - gpasswd
Synopsis
sg [-]
[group [-c ] command]
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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 ,
login , newgrp , su ,
gpasswd , group, gshadow.