#!/usr/bin/perl
($newgroup, @ARGV) = @ARGV;
if ($newgroup eq "")
{
    print "Syntax: usergroupadd newgroup PATTERN\|*\n";
    exit;
}
@input = "| grep -i \"@ARGV\"" if @ARGV;
@users = `cat /etc/passwd @input`;

print "Users modified: ";
foreach $n (@users)
{
    $user =~ /(\S+)/;
    ($a, $b, $c, $d, $name) = split (/:/, $n);
#    ($name) = split(/,/,$name);
    next if ($c < 100);

#    $output = "";
#    @id = split /\s/, `id -Gn $a`;
#    foreach $o (@id)
#    {
#	$output .= "$o,";
#    }
#    $output .= "$newgroup";
#    
#    `usermod -G $output $a`;
    `adduser $a $newgroup`;
    print "$a";
#    print "($output)";
    print ", ";
}
print "Done!\n";