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#!/usr/local/bin/perl -w
# grouper.pl - Manipulate the group file
# $Id: grouper.pl,v 1.1 1999/07/01 14:25:54 ssnodgra Exp $
use Unix::GroupFile;
unless (@ARGV > 1) {
print "Instructions:\n";
print "$0 -a group user ... Add users to group\n";
print "$0 -c group user ... Create new group\n";
print "$0 -r group user ... Remove users from group\n";
exit;
}
$grp = new Unix::GroupFile("/etc/group") or die "Can't open group file";
$option = shift;
$group = shift;
die "Bad group name: $group\n" unless $group =~ /^[a-z][a-z\d]{1,7}$/;
if ($option eq "-a") { # Add users to group
$grp->add_user($group, @ARGV) or die "Add failed\n";
}
elsif ($option eq "-c") {
die "Group $group already exists\n" if defined $grp->gid($group);
$grp->group($group, "*", $grp->maxgid + 1, @ARGV);
}
elsif ($option eq "-r") {
$grp->remove_user($group, @ARGV) or die "Remove failed\n";
}
else {
die "Bogus option $option\n";
}
print "Rewriting group file...\n";
$grp->commit(backup => '~');
print "Done!\n";
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