#!/bin/bash

file=$*

if [ $# -ne 1 ]
then
	echo "Wrong arguments. The file to be checked should be passed as parameter
Type md5check -h for help"
	exit 1
fi

md5file=$file".md5"

if [ $* == -h ]
then
	echo "Give the file to check as only parameter.
The reference md5 sum is to be contained in the file $md5file."
	exit 0
fi

if [ ! -e $md5file ]
then
	echo "No reference md5 sum available for the file $file
It should be contained in the file $md5file.
Type md5check -h for help"
	exit 1
fi

md5sum $file | cut -d " " -f 1 > tmp

cat $md5file | cut -d " " -f 1 > tmp2

cmp tmp2 tmp > res
if [ ! -s res ]
then
	echo "md5 checksum validated"
else
	echo "md5 checksum not valid"
fi

rm tmp
rm tmp2
rm res