devkits-chmod

devkits-chmod

Calculate Unix file permissions (chmod) values

Installation

npm install -g devkits-chmod

Or use without installation:

npx devkits-chmod [args]

Usage

# Show what an octal value means
dk-chmod 755
dk-chmod 644
dk-chmod 600

# Calculate from symbolic permissions
dk-chmod --owner rwx --group r-x --other r-x   # 755
dk-chmod --owner rw --group r --other r        # 644

# Using symbolic notation
dk-chmod -s u+rwx,g+rx,o+rx                     # 755

Output Example

Chmod Calculator Results
========================

Octal: 755

Permissions:
  Owner: rwx (7)
  Group: r-x (5)
  Other: r-x (5)

Binary: 111 101 101

Command: chmod 755 <file>

Common patterns:
  777 - rwxrwxrwx (everyone has full access) ⚠️
  755 - rwxr-xr-x (common for directories)
  644 - rw-r--r-- (common for files)
  600 - rw------- (private file)
  400 - r-------- (read-only, owner only)

Permission Values

Value	Binary	Symbolic	Meaning
7	111	rwx	Read + Write + Execute
6	110	rw-	Read + Write
5	101	r-x	Read + Execute
4	100	r--	Read only
3	011	-wx	Write + Execute
2	010	-w-	Write only
1	001	--x	Execute only
0	000	---	No permissions

Why @devkits/chmod?

• ✅ Fast - Instant calculation
• ✅ Zero dependencies - Pure Node.js
• ✅ Offline - Works without internet
• ✅ Free - Open source (MIT)
• ✅ CLI - Use in your terminal
• ✅ Shows binary and symbolic representations

Web Version

Prefer a GUI? Check out the web version: https://devkits-tools.surge.sh/tools/chmod-calculator

• 84 developer tools in one PWA
• Works offline
• No signup required

Pro Features

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License

MIT © DevKits Team

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