Linux Chmod Permissions Calculator
Developer References100% Client-SideInteractive Linux chmod calculator with visual checkboxes for Owner, Group, Others, octal numbers (755, 644), and symbolic modes.
Quick Presets:
Owner (User)
Group
Others (Public)
Special Flags
Target Type & Name
Octal Notation
755
Symbolic Notation
-rwxr-xr-x
Linux Bash Command
chmod 755 script.sh
SponsorNon-intrusive
What is Linux Chmod Permissions Calculator?
Easily calculate Linux/Unix file permissions using visual checkboxes. Generates standard octal values, symbolic string formats, and bash commands.
How to Use Online
- 1Toggle Permission CheckboxesSelect Read (r), Write (w), and Execute (x) checkboxes for Owner, Group, and Others.
- 2Or Enter Octal CodeOr type any 3-digit octal value (like 755, 644, or 777) to set permissions directly.
- 3View Symbolic RepresentationReview the symbolic representation string (-rwxr-xr-x) in real time.
- 4Copy Chmod CommandCopy the ready-to-run `chmod 755 filename` command into your SSH terminal.
Key Features
- Interactive checkboxes for Read (4), Write (2), and Execute (1)
- Supports SUID, SGID, and Sticky Bit special flags
- One-click presets: 644, 755, 600, 700, 444, 777
- Generates exact chmod terminal commands for files and directories
Common Use Cases
- Setting secure permissions for SSH keys (chmod 600 id_rsa)
- Configuring web server directory access (chmod 755 /var/www)
- Troubleshooting "Permission Denied" errors in Linux servers
Frequently Asked Questions
755 gives full permissions to the owner and read/execute to group/others (standard for scripts and folders). 644 gives read/write to owner and read-only to others (standard for files).