Developer Tools

Chmod Calculator — Linux Permission Converter

Toggle read, write, and execute bits to convert between octal and symbolic chmod formats, with example commands for scripts, directories, and recursive changes.

chmodLinuxPermissions

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Quick actions

Copy this tool URL or open the system share sheet on a supported device.

Use cases

  • Add execute permission to a script without opening 777
  • Compare octal and symbolic notation
  • Prepare recursive chmod commands safely

How to use

  1. Toggle ugo read/write/execute bits
  2. Read the octal and symbolic result
  3. Copy the chmod command example

Example input and output

Permission

rwxr-xr-x

Octal

755

FAQ

When should I use 755 vs 644?

755 is common for executables or traversable directories; 644 is common for ordinary read-only files.

Does it show recursive examples?

Yes. It can include -R examples, but confirm the target path before running them on system directories.

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