Mission 131

Signal simulation

Practice signal language without stopping anything.

Server operations
8 minutes Admin Lesson 131 of 360
pgrepkillps
Lesson 131 of 360 0/360 lessons 0/17 missions Server operations · 8 minutes
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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 nginx

Run pgrep nginx.

pgrep nginx
Record signal

Run kill 42.

kill 42
Confirm process list

Run ps.

ps
Lesson support

What to notice while you play.

Objective

Practice signal language without stopping anything.

Hint

Run the commands in order and compare the outputs.

Why it matters

Junior operators build confidence by gathering evidence before changing systems.

Common mistakes
  • Skipping the inspection step.
  • Assuming one command tells the whole story.
Reference

Commands in this lesson.

ps

Show training server processes.