Checksum utility for BASH

checksum.sh

if [ "$#" -lt 1 ]; then
		echo "Usage : checksum [FILE_PATH..]"
		return
	fi
	for f in "$@"
	do
		if [ -f $f ]; then
			sha=`/usr/bin/openssl sha1 -sha ${f} | tr -s "=" | cut -d ' ' -f 2`
			sha1=`/usr/bin/openssl sha1 -sha1 ${f} | tr -s "=" | cut -d ' ' -f 2`
			sha256=`/usr/bin/openssl sha1 -sha256 ${f} | tr -s "=" | cut -d ' ' -f 2`
			sha512=`/usr/bin/openssl sha1 -sha512 ${f} | tr -s "=" | cut -d ' ' -f 2`
			md5=`/usr/bin/openssl sha1 -md5 ${f} | tr -s "=" | cut -d ' ' -f 2`
			echo "Checksum for file ${f}"
			echo "MD5    : ${md5}"
			echo "SHA    : ${sha}"
			echo "SHA1   : ${sha1}"
			echo "SHA256 : ${sha256}"
			echo "SHA512 : ${sha512}"
		else
			echo "File ${f} does not exist"
		fi
		echo "-----------------------------------"
	done