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NEWGRP(1)		FreeBSD	General	Commands Manual		     NEWGRP(1)

NAME
     newgrp -- change to a new group

SYNOPSIS
     newgrp [-l] [group]

DESCRIPTION
     The newgrp	utility	creates	a new shell execution environment with modi-
     fied real and effective group IDs.

     The options are as	follows:

     -l	     Simulate a	full login.  The environment and umask are set to what
	     would be expected if the user actually logged in again.

     If	the group operand is present, a	new shell is started with the speci-
     fied effective and	real group IDs.	 The user will be prompted for a pass-
     word if they are not a member of the specified group.

     Otherwise,	the real, effective and	supplementary group IDs	are restored
     to	those from the current user's password database	entry.

EXIT STATUS
     The newgrp	utility	attempts to start the shell regardless of whether
     group IDs were successfully changed.

     If	an error occurs	and the	shell cannot be	started, newgrp	exits >0.
     Otherwise,	the exit status	of newgrp is the exit status of	the shell.

SEE ALSO
     csh(1), groups(1),	login(1), sh(1), su(1),	umask(1), group(5), passwd(5),
     environ(7)

STANDARDS
     The newgrp	utility	conforms to IEEE Std 1003.1-2001 (``POSIX.1'').

HISTORY
     A newgrp utility appeared in Version 6 AT&T UNIX.

BUGS
     Group passwords are inherently insecure as	there is no way	to stop	users
     obtaining the crypted passwords from the group database.  Their use is
     discouraged.

FreeBSD	9.2			 May 23, 2002			   FreeBSD 9.2

NAME | SYNOPSIS | DESCRIPTION | EXIT STATUS | SEE ALSO | STANDARDS | HISTORY | BUGS

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