Using the simulated terminal

What works

Most common Linux commands: file ops, users, groups, permissions, services, storage, networking, SELinux, containers, package management.

Tab completion, command history (up/down arrows), Ctrl+C, Ctrl+L (clear).

Pipes, redirection, environment variables, simple shell expansion.

Reboots simulate a fresh boot — services started without enable will not survive.

Some rarely-used flags. If a command throws an "unknown flag" error and you think it should work, file a bug.

Real network calls. The simulator has its own NetworkManager state but no actual internet.

Real GUIs. RHCSA is a CLI exam — that's the point.

Use --help and man (where available) — they show the same output as a real RHEL system.

The simulator persists state across tasks within a session, but a "reboot" task wipes everything that wasn't enabled to start at boot.