Quick rename script to strip the suffix from files in a directory

rename.js

var fs = require('fs');

if(!process.argv[3]) {
	console.log("directory argument required");
	process.exit(0);
}

var dir = process.argv[3];

var files = fs.readdirSync(dir);

var regex = /(.*)_.*\.(.*)/;

for (var entry in files) {
	var newFileName = files[entry].replace(regex, '$1.$2');
	console.log('Renaming: ' + dir + files[entry] + ' -> ' + dir + newFileName);
	fs.renameSync(dir + files[entry], dir + newFileName);
}

process.exit(0);