#!/bin/sh

if [ $# != 2 ];then
	echo "Usage: ${0##*/} USERNAME PASSWORD"
	exit 1
fi

username="$1"
password="$2"

salt=$(grep "^$username:" /etc/passwd | cut -d ':' -f 2 | cut -b 4-11)
grep -q "^$username:$(mkpasswd -m md5 -S $salt "$password")" /etc/passwd

exit $?