Liangxu Linux

Feb 17, 2025 · Operations

Master Linux File Permissions: From Basics to Advanced ACLs

This guide explains Linux file permissions, covering basic read/write/execute rights, symbolic and numeric chmod usage, advanced bits like setuid, setgid and sticky, default umask settings, ownership changes with chown/chgrp, and ACL management with setfacl/getfacl, all illustrated with practical command examples.