#!/bin/sh
# $OpenBSD: rmgroup.sh,v 1.3 2019/09/28 17:30:07 ajacoutot Exp $
#
# Copyright (c) 1996 Wolfram Schneider <wosch@FreeBSD.org>. Berlin.
# All rights reserved.
#
# rmgroup - delete a Unix group
#
# $From: rmgroup.sh,v 1.1 1996/10/30 20:58:47 wosch Exp $

export PATH=/usr/bin:/bin:/usr/sbin:/sbin
db=/etc/group

case "$1" in
	""|-*)	echo "usage: rmgroup group"; exit 1;;
	wheel|daemon|kmem|sys|tty|operator|bin|nogroup|nobody)
		echo "Do not remove system group: $1"; exit 2;;
	*) group="$1";;
esac

if egrep -q -- "^$group:" $db; then
	if egrep -q -- "^$group:\*:0:" $db; then
		echo "Do not remove group with gid 0: $group"
		exit 2
	fi
	egrep -v -- "^$group:" $db > $db.new &&
		cp -pf $db $db.bak &&
		mv -f  $db.new $db
else 
	echo "Group \"$group\" does not exist in $db."; exit 1
fi