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Lesson support

What to notice while you play.

Objective

Hash source and restored files to confirm they match.

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.

sha256sum <file>

Print a deterministic training checksum.

cp <src> <dst>

Copy a file.