Mission 153

Script diff review

Compare config snapshots as a script review habit.

Shell scripting
8 minutes Advanced Lesson 153 of 360
diffgrep
Lesson 153 of 360 0/360 lessons 0/17 missions Shell scripting · 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.

Compare configs

Run diff data/config-a.conf data/config-b.conf.

diff data/config-a.conf data/config-b.conf
Search changed listen

Run grep listen data/config-b.conf.

grep listen data/config-b.conf
Search server name

Run grep server_name data/config-a.conf.

grep server_name data/config-a.conf
Lesson support

What to notice while you play.

Objective

Compare config snapshots as a script review habit.

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.

grep [-i] <text> <file>

Find literal text inside a file.

diff <left> <right>

Compare two lab text files.