Run test -f scripts/deploy.sh.
test -f scripts/deploy.sh
Complete a mini script-review workflow.
Shell scriptingtestprintfteechmod
Click any instruction for the command details, the why, and the common mistake to avoid.
Run test -f scripts/deploy.sh.
test -f scripts/deploy.sh
Run printf shell-checkpoint | tee lab/shell-checkpoint.txt.
printf shell-checkpoint | tee lab/shell-checkpoint.txt
Run chmod 600 lab/shell-checkpoint.txt.
chmod 600 lab/shell-checkpoint.txt
Run stat lab/shell-checkpoint.txt.
stat lab/shell-checkpoint.txt
Create a free account to sync completed lessons, XP, streaks, course status, and your next lesson across sessions.
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Progress sync stores completion IDs, scores, streaks, badges, and game settings. Terminal contents, editor snippets, lab scratch, email, and real names are never published on leaderboards or share cards.
Complete a mini script-review workflow.
Run the commands in order and compare the outputs.
Junior operators build confidence by gathering evidence before changing systems.
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.