RHCSA 10 · EX200
The exam doesn't ask
what you know.
It checks
what your system does.
Three hours at a real shell, fixing real systems, graded on the end state. Blue Penguin drills the commands until recall is automatic — so the only thing left to do on exam day is type.
$1.99 one-time purchase · no ads · no account · works offline
candidate@ex200:~$ ex200-grade --objectives
# the real exam grades the end state, not the answer
# why this exam is different
There is no multiple choice.
There is no partial credit for knowing.
Most certifications ask you to recognise the right answer. The RHCSA sits you in front of broken machines and asks you to fix them. A script checks whether the service came up, whether the mount survived a reboot, whether the context stuck.
Which means the failure mode isn't ignorance — it's hesitation. You know
semanage does the thing. You just can't produce the flags
under a clock with two tasks left.
That gap between knowing and recalling is the entire problem this app solves.
- 3 hoursat a live shell
- 70%to pass — same bar the app holds you to
- 0multiple-choice questions on exam day
- 1thing graded: whether it works
# what this is
A recall layer for the gaps in your day.
Blue Penguin is a study companion for the RHCSA 10 (EX200) exam: eighteen objectives written in plain language, the commands that matter for each, and quizzes that keep asking until the answers come without effort.
It is not a replacement for a lab. Nothing replaces breaking a VM and fixing it. This is for the twenty minutes on a train, the queue at lunch, the ten minutes before bed — the time you can't spend at a terminal but can spend keeping the commands warm.
# try one
A real question from the SELinux set.
A service must listen on 8080/tcp with SELinux enforcing.
Which command lets it bind that port?
semanage port -a adds a new port binding to a type. restorecon relabels files, not ports. setsebool flips a boolean, which isn't what's blocking the bind. firewall-cmd opens the firewall — a different wall entirely.
# what's inside
penguin@rhcsa:~$ tree --summary . ├── objectives/ 18 exam sections, plain-language notes ├── commands/ 114 commands with flags that matter ├── quizzes/ 270 questions, rotated so retakes stay fresh ├── labs/ 10 hands-on labs with verification steps ├── mock/ full timed mock exam └── notes/ your own notes, bookmarks, weak areas 18 directories, 0 network calls
- Spaced by weakness, not by schedule Pass a topic and it stops nagging you. Miss one and it comes back with your score attached.
- Reminders that follow the countdown Set your exam date and prompts step up as it nears — twice a day at first, hourly in the final week.
-
Every screen is a terminal
Prompts, exit codes,
systemctlstatus. You practise reading the output you'll be reading on the day. - Nothing leaves the phone No account, no sync, no analytics. Your progress is yours and it stays on the device.
# why it costs money
$1.99, once. Here's the honest reason.
A free study app pays for itself somehow. Usually that means ads in the middle of a quiz, an account you didn't want, or a quiet data business you're not told about. All three cost you more than $1.99.
Charging for it is what makes the rest of the list possible: no ads, no tracking, no sign-in, no server holding your progress. There is nothing to monetise later because there's nothing collected now.
The other half is upkeep. Objectives shift with each RHEL release, commands get deprecated, and stale exam content is worse than none. $1.99 (one-time purchase, not a subscription) against an exam sitting that costs a few hundred is a rounding error on your certification budget.
- All 18 objectives, 270 questions and 10 labs
- Full timed mock exam
- Works with no signal — everything is on-device
- Free updates as the objectives change
- No ads, no account, no tracking
you@exam:~$ ./sit-the-exam --ready
Close the gap before the clock starts.