Linux Permissions (chmod) Calculator
Check the boxes or type an octal value — either way updates the other, plus the ready-to-run chmod command.
644 — standard file
755 — standard executable/directory
600 — private file (SSH keys)
777 — full access (avoid on real servers)
400 — read-only, owner only
| Read | Write | Execute | |
|---|---|---|---|
| owner | |||
| group | |||
| other |
Octal
Symbolic
Command