Calculates Unix/Linux file permissions interactively. Toggle read, write, and execute permissions for owner, group, and others using checkboxes, and see the numeric (octal) and symbolic notation update in real time. Enter an octal value (like 755) and see the permissions break down. Essential for DevOps and system administration.
Toggle permissions or enter a chmod value to understand and calculate Unix file permissions instantly. For understanding HTTP status codes returned when permission is denied, see the HTTP Status Code Reference.
Web server file
Input
644
Output
Owner: rw- | Group: r-- | Others: r-- (Owner can read/write, others can read)
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| Entity | Read (4) | Write (2) | Execute (1) | Value |
|---|---|---|---|---|
| Owner | 7 | |||
| Group | 5 | |||
| Others | 5 |