Chmod Calculator
Calculate Linux/Unix file permissions. Toggle checkboxes to generate the chmod numeric value and command.
| Read (4) | Write (2) | Execute (1) | |
|---|---|---|---|
| Owner | |||
| Group | |||
| Others |
Numeric Value
755
rwxr-xr-x
$ chmod 755 filename
Common Permissions
755 — Owner: rwx, Group: r-x, Others: r-x (typical for directories and scripts)
644 — Owner: rw-, Group: r–, Others: r– (typical for regular files)
777 — Everyone: rwx (full access, use with caution)
600 — Owner: rw-, no access for others (private files, SSH keys)
FAQ
What does chmod do?
chmod (change mode) sets file access permissions on Unix/Linux systems. Each digit represents owner, group, and others permissions.
What permission should I use?
Use 755 for directories and executables, 644 for regular files, and 600 for sensitive files like SSH keys.