Mission 356

Process signal evidence

Identify a process, inspect the snapshot, and record a simulated signal.

Package/process ops
8 minutes Admin Lesson 356 of 360
pgreppskill
Lesson 356 of 360 0/360 lessons 0/17 missions Package/process ops · 8 minutes
0%
Continue View profile
Ops lab terminal Training lab
New learnerrank 0XP 0%complete
learner@clairos:/home/learner $ Unix ops lab: type a command, press Enter
Instructions 8 minutes

Click any instruction for the command details, the why, and the common mistake to avoid.

Find the nginx process

Run pgrep nginx.

pgrep nginx
Inspect the process table

Run ps.

ps
Record the simulated signal

Run kill 42.

kill 42
Lesson support

What to notice while you play.

Objective

Build repeatable confidence with choosing a process signal from observable evidence.

Hint

Start with pgrep nginx, inspect the result, then continue in order.

Why it matters

Choosing a process signal from observable evidence helps operators explain what they know before they change anything.

Common mistakes
  • Skipping the output that proves choosing a process signal from observable evidence.
  • Changing several things before recording a baseline.
Reference

Commands in this lesson.

ps

Show training server processes.