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newgrp(1)							     newgrp(1)

NAME
       newgrp -	 change effective group ID sg - execute command with different
       group ID

SYNOPSIS
       newgrp [-l] [group]
       sg group -c command

DESCRIPTION
       The newgrp command changes the user's real and  effetive	 group	ID  by
       replacing  the  current shell with a new shell. A new shell is launched
       even if an error occours.

       A password is requested if the group has a password and the user is not
       listed  in the group file as being a member of that group. The password
       can be changed with the gpasswd(1) command.

       If the new effective group ID is not in the supplementary  group	 list,
       newgrp will add the new group ID to the supplementary list, too.

       With no operands and options, newgrp changes the user's group IDs (real
       and effective) back to the group specified in password and group file.

       The sg command works like the newgrp command, except that  it  executes
       the  given  command with /bin/sh and upon exit the group ID of the cur‐
       rent shell is not changed.

OPTIONS
       -l, --login
	      reinitialize the environment as if the user logged in.

       --help Print a help list.

       -u, --usage
	      Print a short usage message.

       -v, --version
	      Print program version.

SEE ALSO
       gpasswd(1), group(5), passwd(1), passwd(5), su(1)

AUTHOR
       Thorsten Kukuk <kukuk@suse.de>

pwdutils			  April 2004			     newgrp(1)

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