Ubuntu Folder Permission Administration - Super User

how i can bulk change directory, folder and file permissions in Ubuntu using the GUI.

What you want to do is a admin task so you need nautilus in administration mode. From a terminal window (Ctrl+Alt+T or dash, "terminal") issue:

sudo nautilus 

• enter password;
• navigate to directory
• Right click on empty space in the main window of nautilus
• Click on properties and go to tab permissions
• Change permissons to what you need

Example of a random directory from my system (/var/tmp/):


The highlighted part does the files inside the directory.