write.js

#!/usr/bin/env node

/*
 * write.js
 *
 * usage: writes a string to a file
 *
 * $ ./write.js <path to file> <contents of file>
 */

const fs = require('fs');
const path = require('path');
const assert = require('assert');

const {argv} = process;

const args = argv.slice(2);

if (args.length === 0) {
  console.log('Usage:\n./write.js <file to create> <contents of file>');
  return;
}

let [file, string, enc] = args;

assert(file, 'pass file to create as first argument');
assert(string, 'pass contents of file as second argument');

if (!enc)
  enc = 'utf8'

file = path.resolve(file);

console.log(`writing file ${file}`);
fs.writeFileSync(file, string, { encoding: enc });