GNU/Linux Mint How to Give Write Permission Of All User Of Group

Granting Write Access

4. 4. Granting Write Permissions on Folder

   Now to Setting Up Permissions Recursively
   To give Read/Write Access only to the Users of the Folder’s Group simply use:

   sudo chmod -R 770 /[path/2/target]

   So for instance:

   sudo chmod -R 770 /usr/local/rvm

   Instead, Allowing the Read Access to Everybody with:

   sudo chmod -R 775 /[path/2/target]