var fs = require('fs'); var path = require('path'); var cliArgs = process.argv.slice(2); function mkdir_callback(err) { if (err) { throw err; } } var i, dir; for (i = 0; i < cliArgs.length; i++) { dir = path.resolve(cliArgs[i]); if (!fs.existsSync(dir)) { fs.mkdirSync(dir, mkdir_callback); } }