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Unix Permission Calculator

Toggle read/write/execute for owner, group, and others to get octal and symbolic chmod values.

Who Read (r) Write (w) Execute (x)
Owner (u)
Group (g)
Others (o)

Command: chmod 644 file

Example

Owner read+write, group/others read-only → octal 644, symbolic rw-r--r--.

FAQ

This calculator covers the basic 9 permission bits (ugo × rwx). Special bits are not included.
Use the checkboxes; the octal and symbolic fields update automatically.

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