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Chmod Calculator
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Chmod Calculator

Calculate file permissions for Unix/Linux systems

About Chmod Permissions

Chmod (change mode) sets file permissions in Unix/Linux systems. Permissions are represented as three octal digits (0-7) for owner, group, and others, or as symbolic notation (rwx).

Owner (User)

Group

Others

Chmod Tips

  • 644: Common for files (owner read/write, others read)
  • 755: Common for directories (owner full, others read/execute)
  • 600: Owner only (read/write)
  • 777: Full permissions for everyone (use carefully)
  • Symbolic: Use +rwx or -rwx for adding/removing permissions
  • Security: Be careful with execute permissions on files

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