Paths/DevOps Engineer/Linux / Processes
Identify a Running Process
An application called 'app' is running on this machine. Find its PID with ps, confirm it from the command line arguments, and record it.
Validator
⏱ 0:00
IDLE — checks run live as you type commands; submit when done
01Requirements
live checks- Directory ~/report exists○
- File ~/report/app-pid.txt exists and contains the PID of the app process○
02Walkthrough
1 of 5 revealed- 01
List all running processes
ps aux shows every process: user, PID, CPU/mem usage, and the full command. aux means: all users, include processes without a terminal, show full command lines.
ps aux - 4 locked · each failed submit reveals one
03Stuck?
0 of 3 revealedTake a hint without losing the lab — each one points at the thing to look at, not at the answer.
04AI Tutor
guides, never solvesTell me what you're stuck on — I'll nudge, not solve. Which requirement are you looking at?
04Notebook
saved locally in this browserlearner@lab — ubuntu:24.04
Session is disposable
↑/↓ recalls commands · Ctrl+Enter submits · type help for the command list