Linux File Permissions & Chmod Calculator
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Calculate 755, 644 octal and symbolic file permissions with commands.
User / Owner7
Group5
Others / Public5
Special Permission Bits (4-Digit Mode: 0)Advanced POSIX Capabilities
Target File / Directory Path
chown User:Group (Optional)
:
Permissions are properly constrained. No world-writable vulnerabilities detected.
Generated CommandOctal: 0755Symbolic: -rwxr-xr-x
chmod 755 /var/www/app/start.sh
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All computation executes exclusively inside your device memory using Web APIs and WebAssembly. No data or files ever leave your browser.
Real-Time Native Execution
Zero network roundtrips. Operates offline without sending external API requests, delivering instantaneous sub-millisecond computation.
Developer-First Architecture
Engineered with RFC standards, cryptographic primitives (Web Crypto Subtle API), and production-grade formatting libraries.
Step-by-Step: How to Use Linux File Permissions & Chmod Calculator
- Set Permissions: Check Read, Write, and Execute boxes for Owner, Group, and Public.
- Choose Path: Specify your target file path and optionally toggle recursive (-R).
- Copy Command: Copy the formatted chmod terminal command for bash or zsh.
Frequently Asked Questions
What does chmod 755 mean?
Chmod 755 gives the file Owner full read, write, and execute permissions (7), while Group and Others can only read and execute (5).
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