Ubuntu Sverige

The letters ‘rwxXstugo’ select the new permissions for the affected users: read (r), write (w), execute (or access
      for directories) (x), execute only if the file is a directory or already has execute permission for some user (X),
      set  user or group ID on execution (s), sticky (t), the permissions granted to the user who owns the file (u), the
      permissions granted to other users who are members of the file’s group (g), and the permissions granted  to  users
      that are in neither of the two preceding categories (o).