| Codice | Permesso |
| 0 (or blank) | No permissions |
| 1 | Execute |
| 2 | Write |
| 3 | Execute + Write |
| 4 | Read |
| 5 | Read + Execute |
| 6 | Read + Write |
| 7 | Read + Write + Execute |
per le cartelle:
chmod 755
| Codice | Permesso |
| 0 (or blank) | No permissions |
| 1 | Execute |
| 2 | Write |
| 3 | Execute + Write |
| 4 | Read |
| 5 | Read + Execute |
| 6 | Read + Write |
| 7 | Read + Write + Execute |
per le cartelle:
chmod 755