execute command as different group ID
see also :
id - login - newgrp - su - gpasswd
[group [-c ] command]
add an example, a script, a trick and tips
no example yet ...
... Feel free to add your own example above to help other Linux-lovers !
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
The following configuration variables in /etc/login.defs change
the behavior of this tool:
Enable "syslog" logging of sg activity.
User account information.
Secure user account information.
Group account information.
Secure group account information.
login , newgrp , su ,
gpasswd , group, gshadow.