Security: Safe
chmod 440 — r--r-----
Owner has (r--), Group has (r--), and Others have (---).
Live Interactive Permission Matrix
Linux chmod Calculator & Generator
Octal Value
440
Symbolic
r--r-----
Quick Presets:
Owner (User)
The file creator
Group
Team or service account
Public (Others)
All other system users
Security Assessment
Status: Safe
Target:
chmod 440 deploy.shchmod -R 440 /var/www/deploy.shInteractive Permission Matrix (rwx)
| Role | Read (r - 4) | Write (w - 2) | Execute (x - 1) | Octal Total |
|---|---|---|---|---|
| Owner (User) | 4 | |||
| Group | 4 | |||
| Others (Public) | 0 |
Copyable chmod 440 Commands
Apply to Single File
chmod 440 target_fileApply Recursively to Directory
chmod -R 440 /path/to/folderOnly Apply to Directories (find)
find /path/to/folder -type d -exec chmod 440 {} +Only Apply to Files (find)
find /path/to/folder -type f -exec chmod 440 {} +Recommended Real-World Use Cases
- •Files requiring owner r-- and group r--
- •Restricted scripts and utilities
- •Custom deployment configurations
Security Consideration
chmod 440 (r--r-----) configures specific Linux permission bits where the owner receives numeric value 4, the group receives 4, and public users receive 0. Total combined mask is 440.
Frequently Asked Questions
chmod 440 Questions & Answers
Common questions regarding Linux permissions, security risks, and recursive chmod commands.
Owner has (r--), Group has (r--), and Others have (---). In symbolic notation, this is represented as "r--r-----".