About Chmod Permissions
Chmod (change mode) sets file permissions in Unix/Linux systems. Permissions are represented as three octal digits (0-7) for owner, group, and others, or as symbolic notation (rwx).
Chmod Tips
- 644: Common for files (owner read/write, others read)
- 755: Common for directories (owner full, others read/execute)
- 600: Owner only (read/write)
- 777: Full permissions for everyone (use carefully)
- Symbolic: Use +rwx or -rwx for adding/removing permissions
- Security: Be careful with execute permissions on files