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Chmod Calculator

Calculate Unix file permissions using checkboxes, numeric, or symbolic notation.

Permissions

Owner

Group

Others

Special Bits

Result

chmod command

$ chmod 644 filename
Read
Write
Execute
Owner
Group
Others

About Unix Permissions

Unix file permissions use three sets of read/write/execute bits for owner, group, and others. The numeric (octal) form represents each set as a digit from 0-7. Symbolic notation uses r, w, x letters. Special bits include setuid (4), setgid (2), and sticky (1).

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