Generate chmod Commands | Visual Linux Permissions Calculator 🐧

Stop memorizing octal codes. Toggle checkboxes to instantly generate the exact chmod command you need for your terminal, complete with symbolic notation.

Why use this tool?

Managing Linux servers shouldn't require binary mental math. Whether you're a DevOps pro or just starting with your first VPS, this tool streamlines your workflow:

• Stop the mental math: No more adding 4, 2, and 1 for every role.
• Prevent security leaks: Avoid the "777" trap by visualizing exactly who has access.
• Master the syntax: Generate perfectly formatted commands, including the -R flag for recursive changes.

Features

• Visual Matrix: Toggle Read, Write, and Execute bits for Owner, Group, and Others in real-time.
• Reverse Lookup: Paste an octal code like 644 to instantly see its symbolic permissions.
• Recursive Mode: Enable the -R switch to apply changes to all subdirectories and files.
• One-Click Copy: Grab the full command and paste it directly into your SSH session or deployment script.

FAQ

How do the numbers work? Permissions use a simple sum: Read (4) + Write (2) + Execute (1). For example, Read & Write equals 6.

What are the "standard" permissions? Most web environments use 755 for directories and 644 for files. Sensitive configuration files (like .env) should typically be set to 600.

Does this support SUID or Sticky Bits? This tool focuses on the standard 3-digit permissions that cover 99% of daily server administration and web development tasks.

⚠️ Security Note: The "777" Trap

Running chmod 777 grants full control to every user on the system. While it "fixes" permission errors instantly, it creates a massive security hole in production environments. Always follow the Principle of Least Privilege: grant only the minimum access required for a file to function.