Node cli script to create checksums of a file

checksum.js

#!/usr/bin/env node
// output a file checksum using crypto
// Ex call: ./checksum.js md5 package.json

const hash = require('crypto').createHash(process.argv[2]).setEncoding('hex')
require('fs').createReadStream(process.argv[3]).pipe(hash.on('finish',() => {console.log(hash.read())}))