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)
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