Some Basic examples of setting permissions to Files.
Granting an additional user read access
$ setfacl -m u:lisa:r file
Revoking write access from all groups and all named users (using the effective rights mask)
$ setfacl -m m::rx file
Removing a named group entry from a file’s ACL
$ setfacl -x g:staff file
Copying the ACL of one file to another
Methond 1:
$ getfacl file1 | setfacl --set-file=- file2
Method 2:
$ getfacl file1 > acls.txt $ setfacl -f acls.txt file2
Copying the access ACL into the Default ACL
getfacl --access dir | setfacl -d -M- dir