Delete Files called foo, deletes files that end in foo from a folder called tmp

FooDeleter.js

var fs = require('fs');

function fileEndsWith(fileName, suffix) {
    return fileName.indexOf(suffix, fileName.length - suffix.length) !== -1;
};

var dir = './tmp/';

fs.readdir(dir, function(err, files) {
	if (err) throw err;

	var fileLength = files.length;
	console.log('found ' + fileLength + 'files');

	for(var i = 0; i < fileLength; i++) {
		var fileName = files[i];
		console.log('Moved onto ' + fileName);

		if(fileEndsWith(fileName, '.foo')){
			var location = dir + fileName;

			fs.unlink(location, function (err) {
			  	if (err) throw err;
			  	console.log('successfully deleted ' + location);
			});
		}
	}
});

changed line 20 to use dir variable instead of the './tmp/' string