sg

NEWGRP(1)                                                            NEWGRP(1)



NAME
       newgrp - log in to a new group
       sg - execute command as different group ID

SYNOPSIS
       newgrp [-] [group]
       sg [-] [group [[-c] command]]

DESCRIPTION
       newgrp  is  used to change the current group ID during a login session.
       If the optional - flag is given, the user's environment will be  reini-
       tialized  as though the user had logged in, otherwise the current envi-
       ronment, including current working directory, remains unchanged.

       newgrp changes the current real group ID to the named group, or to  the
       default group listed in /etc/passwd if no group name is given. The user
       will be prompted for a password if she do not have a password  and  the
       group  does, or if the user is not listed as a member and the group has
       a password. The user will be denied access if  the  group  password  is
       empty and the user is not listed as a member.

       The  sg  command  works  similiar to newgrp but accepts a command.  The
       command will be executed with the Bourne 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 new-
       grp 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.

FILES
       /etc/passwd - user account information
       /etc/group - group information

SEE ALSO
       id(1), login(1), su(1)

AUTHOR
       Julianne Frances Haugh <jockgrrl AT ix.com>



                                                                     NEWGRP(1)