Hex digest generator.

digest.groovy

#!/usr/bin/env groovy

import java.security.MessageDigest

if(args.length < 1) {
    System.err.println("usage: digest.groovy string [type]")
    return
}

def src = args[0]

def type = "SHA1"
if(args.length >= 2) {
    type = args[1]
}

def md = MessageDigest.getInstance(type)
md.update(src.getBytes())
println md.digest().collect { String.format("%02x", it) }.inject("") { str, item -> str + item }