How should you use this practice guide?
| Practice area | What to do | How to verify it |
|---|---|---|
| Files and text | find , grep , sed , awk , sort , cut , tar , rsync | Confirm the result with an independent command or system-state check. |
| Identity | id , useradd , usermod , groupadd , passwd , sudo | Confirm the result with an independent command or system-state check. |
| Services/logs | systemctl , journalctl , ps , top , kill | Confirm the result with an independent command or system-state check. |
Files and text
find, grep, sed, awk, sort, cut, tar, rsync
Identity
id, useradd, usermod, groupadd, passwd, sudo
Services/logs
systemctl, journalctl, ps, top, kill
Storage
lsblk, blkid, findmnt, mount, df, du
Networking
ip, ss, ping, curl, dig/resolvectl, ssh
Permissions
chmod, chown, chgrp, umask, getfacl/setfacl where relevant
Practice pattern
For each command family: inspect current state → make one change → verify → break it intentionally → diagnose → restore. That sequence is closer to real administration than command memorization.
Learn state-changing and verification commands together
Knowing useradd is less useful if you cannot verify the resulting UID, groups, home directory and shell. Pair configuration commands with inspection commands such as id, getent, lsblk, findmnt, systemctl status, journalctl, ip and ss. This makes practice diagnostic rather than mnemonic.
Build timed task sets
Create small scenarios that cross command families: add a user, create a directory with restricted group access, mount a filesystem persistently, expose a service, confirm the listening socket, restart it, inspect logs and then undo the changes. Record which steps required documentation. Repeat only the weak areas until the workflow is routine.
The exact commands and options that matter depend on the certification and its current objectives. Use this page as a practice organizer, then validate scope against the issuer before exam preparation becomes narrowly focused.
Frequently asked questions
What should you practice first?
Start by practicing the commands that answer real administration questions, then verify each result instead of memorizing a giant command list.
Does this guide replace the official certification objectives?
No. Use this guide as practice support and keep the current issuer objectives or competencies beside your lab notes so your preparation stays aligned with the live exam.
How do you know the practice worked?
Verify the resulting system state with an independent command, log, service check or repeatable test instead of assuming a command succeeded because it returned no error.