| acledit | Edits the access control information of a file. |
| aclget | Displays the access control information of a file. |
| aclput | Sets the access control information of a file. |
| chmod | Changes permission modes. |
| chown | Changes the user associated with a file. |
| lock | Reserves a terminal. |
| lsgroup | Displays the attributes of groups. |
| xlock | Locks the local X display until a password is entered. |
Chapter 8, Backup Files and Storage Media