folderBackUp.gs

/***************************************************
 This Google Script will make a backup of the
 selected folder
***************************************************/

var TARGET_FOLDER_NAME = 'folder_name';


//Main function
function start() {

 var today = new Date().toDateString();
 var sourceFolder = TARGET_FOLDER_NAME;
 var targetFolder = TARGET_FOLDER_NAME + ".BackUp." + today.split(" ").join("-");

 var source = DriveApp.getFoldersByName(sourceFolder);
 var target = DriveApp.createFolder(targetFolder);

 if (source.hasNext()) {
 copyFolder(source.next(), target);
 }

}


function copyFolder(source, target) {

 var folders = source.getFolders();
 var files = source.getFiles();

 while (files.hasNext()) {
 var file = files.next();
 file.makeCopy(file.getName(), target);
 }

 while (folders.hasNext()) {
 var subFolder = folders.next();
 var folderName = subFolder.getName();
 var targetFolder = target.createFolder(folderName);
 copyFolder(subFolder, targetFolder);
 }

}