Linux: practice, test and prove it
Files and directories, permissions, processes, pipes, grep and find, services and logs on Linux.
Linux screenings for support and DevOps roles rarely ask you to recite history. They show a command or a short scenario and ask what happens: what chmod 640 allows, which command finds a log file, how to stop a process that will not respond, or why a service is not running after a reboot.
This page lets you check those everyday skills against the pass mark. The questions mirror the tasks you would do on a real server in your first months, and the lessons cover permissions, processes and logs in the order most people need them on the job.
Benchmark: The pass mark is 80%, and Linux basics are commonly screened for technical support, NOC, system administration and junior DevOps roles. Requirements vary by employer.
Lessons
Interview prep
Certificate
Common questions
Which Linux distribution should I practise on?
Ubuntu or another Debian-based distribution is a practical start because guides are easy to find. The commands in this test work the same way on most distributions, except package managers, which differ between families.
Do I need to memorise every command option?
No. Screenings focus on common options such as ls -la, grep -i, find -name and chmod with numbers. Knowing how to check a manual page with man or --help matters more than memorising rare flags.
Is this test enough for a Linux certification?
No. This test checks working basics for entry-level roles. Certifications cover a wider syllabus and go deeper into storage, networking and scripting.