Copy-ready commandchmod — Basic Usage
chmod 640 /etc/app.confRequirements and permissions
- Requirements
- Linux with the referenced utility installed
- Permissions
- Use sudo or root only when required
- Last reviewed
- 2026-07-31
Examples
Basic Usage
Use chmod for a standard administrative task.
chmod 640 /etc/app.confOriginal command
Change file permissions.
chmod 640 /etc/app.confCommon errors
Command not found
Confirm Linux with the referenced utility installed is installed and available in your current shell.