setfacl - set file access control lists

syntax $ setfacl option file

To modify ACLs of file to give read and write permission to user1 $ setfacl -m u:user1 rw file

To remove all extended ACL entries $ setfacl -b file.txt

To remove entries from the ACL of file, To remove group 'ilugc' from a file's ACL $ setfacl -x g:ilugc file.txt

To remove the default ACL $ setfacl -k file

To apply operations to all files and directories recursively $ setfacl -m g:ilugc:rw -R directory

To restore a permission backup $ setfacl --restore=file

To copy the ACL of one file to another $ getfacl example.txt | setfacl --set-file=- f sample.txt

regards, T.Dhanasekar