CompTIA Linux+ Portable Command Guide: All the commands for the CompTIA XK0-004 exam in one compact, portable resource, 2nd Edition

Chapter 15. Given a scenario, apply or acquire the appropriate user and/or group permissions and ownership

This chapter provides information and commands concerning the following topics:

File and directory permissions

• Read, write, execute

• User, group, other

• SUID

• Octal notation

• umask

• Sticky bit

• GUID

• Inheritance

• Utilities (chmod, chown, chgrp, getfacl, setfacl, ls, ulimit, chage)

Context-based permissions

• SELinux configurations (disabled, permissive, enforcing)

• SELinux policy (targeted)

• SELinux tools (setenforce, getenforce, sestatus, setsebool, getsebool, chcon, restorecon, ls -Z, ps -Z)

• AppArmor (aa-disable, aa-complain, aa-unconfined, /etc/apparmor.d/, /etc/apparmor.d/tunables)

Privilege escalation

• su

• sudo

• wheel

• visudo

• sudoedit

User types ...