Continue your lesson
Connect the command you run to the file, process, service, permission, or kernel state it changes.
Block 1 of 1Compare ps · top · nice · cron
Current · 8 min
Compare ps · top · nice · cron
Optional concept notes
ps
Displays a snapshot of selected running processes.
top
Interactively updates process and system resource statistics.
nice
Starts a process with a selected CPU scheduling priority adjustment.
cron
Runs recurring jobs according to time-based schedule entries.
Complete one provider lesson, then answer four related questions. That is enough for today; more practice is optional.
Your lesson stays open here while the provider opens in another tab. Choose one source; the notes above are optional.
Practice the reasoning here
Use a disposable Linux system. Predict a command's effect, run it, inspect exit status and logs, then restore the starting state.
- State the expected result before changing or testing anything.
- Name the observation, command, log, or report that would confirm it.
- Explain why the closest alternative does not fit the same requirement.
Check the whole objective
This unlocks objective 2.3 for recall. The latest checkpoint needs 70% or higher; a lower result puts the lesson back near the front of your timeline.