12 practical Linux Command Line questions with an explanation after every answer. No timer, no signup — about 8 minutes.
This Linux Command Line quiz is a Practical fundamentals check. It covers navigation, permissions, pipes, text search, processes, disk usage, services, SSH, archives, and environment variables. The quiz has 12 questions, takes about 8 minutes, and a score around 8 out of 12 means you have a workable baseline.
The 12 questions on this page are built for terminal fluency screening. They focus on practical decisions you would make while building, debugging, querying, or operating real projects.
Three examples from the 12-question quiz. Answers stay hidden until you reveal them.
Which command logs into a remote host as user deploy?
ssh user@host starts a secure shell session on the remote machine. scp copies files over SSH.
Which command extracts a gzip-compressed tar archive?
tar -xzf extracts a .tar.gz archive: x means extract, z means gzip, and f names the file.
Which command prints environment variables?
env prints the current process environment. echo $NAME prints one variable, and export NAME=value sets a variable for child processes.
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