## 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  reinitialized as though the
           user had logged in,  otherwise  the  current  environment,
           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 pass
           word 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 com
           mand.  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 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.

## FILES

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

## SEE ALSO

           id(1), login(1), su(1)

## AUTHOR

           Julianne Frances Haugh <jockgrrl@ix.netcom.com>

                                                            NEWGRP(1)