Remove all the ImageGen cache files and directories from a root media folder. npm install underscore q optimist OR npm install underscore q optimist -g

cleanImageGenCache.js

#!/usr/bin/env node

var _ = require('underscore');
var fs = require('fs');
var Q = require('q');
var argv = require('optimist')
	.usage('Usage: $0 -base [directory')
	.demand(['base'])
	.describe('base', 'Media directory')
	.argv;

var files = fs.readdirSync(argv.base);

var deleteCacheDir = function(cache) {
	var deferred = Q.defer();

	fs.exists(cache, function(exists) {
		if (exists) {
			console.log('Removing ' + cache + '...');
			fs.readdir(cache, function(err, cacheFiles) {
				_.each(cacheFiles, function(cacheFile) {
					cacheFile = cache + '/' + cacheFile;
					fs.unlink(cacheFile);
				});
				fs.rmdir(cache, function() {});
				deferred.resolve();
			});
		} else {
			deferred.resolve();
		}
	});

	return deferred.promise;
}


var promises = [];
_.each(files, function(file) {
	var cache = argv.base + '/' + file + '/Cached';
	promises.push(deleteCacheDir(cache));
});

Q.all(promises).then(function() {
	console.log('All done');
}).fail(function(err) {
	console.log('error: ' + err);
});