Run cp /etc/nginx/sites-available/learn.conf lab/learn.conf.
cp /etc/nginx/sites-available/learn.conf lab/learn.conf
Click any instruction for the command details, the why, and the common mistake to avoid.
Run cp /etc/nginx/sites-available/learn.conf lab/learn.conf.
cp /etc/nginx/sites-available/learn.conf lab/learn.conf
Run cp lab/learn.conf lab/learn.conf.bak.
cp lab/learn.conf lab/learn.conf.bak
Run diff lab/learn.conf lab/learn.conf.bak.
diff lab/learn.conf lab/learn.conf.bak
Create a free account to sync completed lessons, XP, streaks, course status, and your next lesson across sessions.
Checking account status...
Progress sync is idle.
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.
Create a backup copy and compare after editing.
Copy the file twice, then edit one copy.
Diffing against a backup shows exactly what changed.
nano <file>
Open a simulated nano editor.
diff <left> <right>
Compare two lab text files.
cp <src> <dst>
Copy a file.