chmod - change file mode bits 
    | access |  | 
    | u | user | 
  | g | group | 
  | o | others | 
  | a | all | 
  
   | file mode bits |  | 
    | r | read | 
  | w | write | 
  | x | executable | 
  
chmod [ugoa] [-+=] [rwxXst]
 User write access chmod u+w <filename>
 Group write access chmod g+w <filename>
 All write access chmod a+w <filename>
   Resources 
 
  Created: 17.10.2021