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Utilities
Chmod Calculator
Work out chmod permissions with checkboxes and get the octal value, symbolic form and command.
- Runs in your browser
- Instant results
- Free, no sign-up
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How to use the Chmod Calculator
- Tick permissions for owner, group and others, or type an octal value.
- Add special bits if needed.
- Copy the chmod command.
Frequently asked questions
What does chmod 755 mean?
Owner can read, write and execute; group and others can read and execute. Typical for scripts and folders.
What is the difference between 644 and 755?
644 is for regular files (no execute). 755 adds execute, needed for scripts and to open folders.
What is the sticky bit?
On a folder, it lets only a file's owner delete or rename it, as in /tmp.
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