Mission 262

Executable bit review

Set executable mode only after reading a script.

Shell scripting
8 minutes Advanced Lesson 262 of 360
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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.

Read health script

Run cat scripts/health-check.sh.

cat scripts/health-check.sh
Set executable

Run chmod 755 scripts/health-check.sh.

chmod 755 scripts/health-check.sh
Inspect health script

Run stat scripts/health-check.sh.

stat scripts/health-check.sh
Lesson support

What to notice while you play.

Objective

Set executable mode only after reading a script.

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.

cat <file>

Print text file contents.

chmod <mode> <path>

Change a simulated numeric permission mode.

stat <path>

Show lab file details.