Mission 155

Shell scripting checkpoint

Complete a mini script-review workflow.

Shell scripting
8 minutes Capstone Lesson 155 of 360
testprintfteechmod
Lesson 155 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.

Check script exists

Run test -f scripts/deploy.sh.

test -f scripts/deploy.sh
Write checkpoint log

Run printf shell-checkpoint | tee lab/shell-checkpoint.txt.

printf shell-checkpoint | tee lab/shell-checkpoint.txt
Protect checkpoint log

Run chmod 600 lab/shell-checkpoint.txt.

chmod 600 lab/shell-checkpoint.txt
Inspect checkpoint log

Run stat lab/shell-checkpoint.txt.

stat lab/shell-checkpoint.txt
Lesson support

What to notice while you play.

Objective

Complete a mini script-review workflow.

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.

printf <text>

Print formatted training text.

tee <file>

Write piped text to a lab file and keep it on screen.

test -e|-f|-d <path>

Check path type in a training-friendly way.

chmod <mode> <path>

Change a simulated numeric permission mode.