AT&T UNIX™PC Unix System V Users Manual - tenox

NEWGRP ( I ) NEWGRP ( I )
NAME
newgrp - log in to a new group
SYNOPSIS
newgrp [ - ] [ group ]
DESCRIPTION
Newgrp changes the group identification of its caller, analogously
to login (lM). The same person remains logged in, and the current
directory is unchanged, but calculations of access permissions to
files are performed with respect to the new group ID.
Newgrp without an argument changes the group identification to
the group in the password file; in effect it changes the group
identification back to the caller's original group.
An initial - flag causes the environment to be changed to the one
that would be expected if the user actually logged in again.
A password is demanded if the group has a password and the user
himself does not, or if the group has a password and the user is
not listed in fete/group as being a member of that group.
When most users log in, they are members of the group named
other.
FILES
/etc/group
/etcjpasswd
SEE ALSO
login( 1M), group( 4).
BUGS
There is no convenient way to enter a password into /etc/group.
Use of group passwords is not encouraged, because, by their very
nature, they encourage poor security practices. Group passwords
may disappear in the future.
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