CHMOD Calculator
Professional Linux file permissions calculator with real-time security analysis. Convert between octal (755), symbolic (rwxr-xr-x), and rwx notations instantly.
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What is CHMOD Calculator?
Chmod Calculator visualizes Unix file permissions. Tick boxes for Read/Write/Execute access and get the corresponding octal code (e.g. 755).
Key Benefits
- Visual interface
- Prevents errors
- Octal & symbolic
- Learning tool
Common Use Cases
- •Server setup
- •File security
- •Script execution
- •Linux admin
How to Calculate Chmod
- Select: Check boxes for Reader, Write, Execute.
- Code: View the numeric code (e.g., 755).
- Command: Copy the chmod command.
Key Features
- Convert between numeric and symbolic chmod
- Visual permission toggles (r/w/x)
- Owner, group, others breakdown
- Common permission presets (755, 644)
- Copy chmod command
- Permission explanation
Frequently Asked Questions
What do the numbers mean?
Read=4, Write=2, Execute=1. Sum them up (e.g., 7=4+2+1 for all permissions).
What is 777?
Full permissions (Read/Write/Execute) for Owner, Group, and Public. Usually insecure.
How to apply?
Use the command "chmod <number> <filename>" in your terminal.