mongodb list all collection for a database and stats like storage size and chunk count

mongoDataStats.js

function getReadableFileSizeString(fileSizeInBytes) {
	    var i = -1;
	    var byteUnits = [' kB', ' MB', ' GB', ' TB', 'PB', 'EB', 'ZB', 'YB'];
	    do {
		            fileSizeInBytes = fileSizeInBytes / 1024;
		            i++;
		        } while (fileSizeInBytes > 1024);
	    return Math.max(fileSizeInBytes, 0.1).toFixed(1) + byteUnits[i];
};
function getStatsFor(dbs){
	    var dbstat = db.getSiblingDB(dbs);
	    var collectionNames = dbstat.getCollectionNames(), stats = [];
	    collectionNames.forEach(function (n) { stats.push(dbstat.getCollection(n).stats());});
	    stats = stats.sort(function(a, b) { return b['size'] - a['size']; });
	    for (var c in stats) { 
		            print(
				            stats[c]['ns'] +","+ 
				            stats[c]['count'] +","+ 
				            stats[c]['nindexes'] +","+ 
				            getReadableFileSizeString(stats[c]['totalIndexSize']) +","+ 
				            getReadableFileSizeString(stats[c]['size']) +","+
				            stats[c]['nchunks'] +","+ 
				            getReadableFileSizeString(stats[c]['storageSize']) );
		        }
}
print("collectionName,documentCount,indexesCount,totalIndexSize,size,nChunkCount,storageSize");
getStatsFor('yourdatabasename')