v7 man page for newgrp

NEWGRP(1)						      General Commands Manual							 NEWGRP(1)

NAME
       newgrp - log in to a new group

SYNOPSIS
       newgrp group

DESCRIPTION
       Newgrp  changes the group identification of its caller, analogously to login(1).  The same person remains logged in, and the current direc-
       tory is unchanged, but calculations of access permissions to files are performed with respect to the new group ID.

       A password is demanded if the group has a password and the user himself does not.

       When most users log in, they are members of the group named `other.'  Newgrp is known to the shell, which executes it  directly	without  a
       fork.

FILES
       /etc/group, /etc/passwd

SEE ALSO
       login(1), group(5)

																	 NEWGRP(1)