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Linux Chmod Permissions Calculator

Calculate Linux file permissions in octal (755, 644) and symbolic notation (rwxr-xr-x) with interactive checkboxes.

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Zero Persistent Storage
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Informational Disclaimer: This calculator provides mathematical estimates for educational and informational purposes only. It should not be considered professional financial, medical, nutritional, legal, or investment advice.
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How to Use Linux Chmod Permissions Calculator

  1. 1

    Check desired permissions boxes.

  2. 2

    Copy numeric octal code.

Key Features

  • Interactive Read/Write/Execute grid for Owner, Group, Public
  • Octal numeric & symbolic code outputs
  • CLI `chmod` command helper

Benefits

  • Never guess Linux file permissions when setting up servers

Common Pitfalls to Avoid

  • • Setting web files to 777 which creates critical security vulnerabilities.

Data Handling & Privacy Notice

This utility executes entirely client-side in your web browser. No text, calculations, or uploaded data are sent to our servers or stored in any database.

Frequently Asked Questions

755 gives full permissions to owner, and read/execute access to group and others.

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