Skip to content
abdallahmekky

QUICK REFERENCE

Cheat sheets

14 quick references for the Linux work behind RHCSA and RHCE, written for study. Search them, copy from them, print them.

RHCSA

The core Red Hat system administration tasks.

100 commands

Exam-domain commands

Searchable commands for every RHCSA domain, plus Vim and Ansible.

7 sections

systemd

Services, logs, targets, timers, recovery.

7 sections

SELinux

Modes, contexts, booleans, ports, troubleshooting.

8 sections

Storage

Partitions, LVM, XFS, fstab, swap, NFS.

6 sections

Networking

nmcli, ip, ss, DNS, firewalld.

7 sections

Users & permissions

useradd, chage, chmod, ACLs, sudo.

6 sections

Podman

Run, build, volumes, Quadlet systemd services.

6 sections

dnf & rpm

dnf, rpm, repositories, subscription-manager.

6 sections

SSH

Keys, scp, rsync, config, tunnels, sshd.

RHCE

Automation with Ansible.

12 sections

Ansible

Inventory, playbooks, modules, roles, Vault.

Shell & editors

The text-mode skills behind everything else.

20 sections

Bash

Variables, expansion, loops, functions, arrays, traps.

10 sections

Vim

Modes, movement, editing, search and replace, macros.

6 sections

grep, sed & awk

find, grep, sed, awk, sort and friends.

Dev tools

Everyday terminal tools.

6 sections

tmux

Sessions, windows, panes, copy mode, config.

9 sections

Git

Setup, commits, branches, remotes, undo, stash.

52 commands

Terminal tools

Quick shortcuts for tmux, zsh, Git, GitHub CLI and nvm.

Questions

Which cheat sheets are available?

Bash, systemd, SELinux, Storage, Networking, Users & permissions, Podman, dnf & rpm, SSH, Ansible, Vim, grep, sed & awk, tmux, Git, plus searchable RHCSA and RHCE command notes and a terminal tools sheet for zsh, the GitHub CLI and nvm.

Can I copy commands from the cheat sheets?

Yes. Click a command, or use the Copy button on a code block. The searchable sheets also support the / key to search and a Print button.

Do the cheat sheets contain real exam content?

No. They only cover public, everyday commands and syntax from documentation, never real exam questions.