Linux Administration
Unscored tasks with hints and instant feedback. Practice results never become credentials.
Short lesson
Combine small tools: grep filters lines, awk/cut pick fields, sort | uniq -c counts, xargs turns lines into arguments. Read logs with journalctl -u UNIT.
Make ~/shared/report.txt readable and writable by you, readable by your group, and not accessible to others.
Sign up to practiseCreate a user deploy with a home directory and the shell /bin/bash, and add it to a new group www-data.
Sign up to practiseThe web service (systemd unit “web”) fails to start. Find the cause, fix it, start the service and make sure it starts on boot.
Sign up to practiseInstall htop from the package manager and confirm the installed version is recorded in ~/htop-version.txt (any output that contains the version string).
Sign up to practiseLucas left the company. Lock his account, remove him from the sudo group, and transfer ownership of /srv/reports (recursively) to user ana.
Sign up to practiseSecure the application secrets: /etc/app/secret.env must be owned by root and readable only by root (600). Remove world-write permission from every file under /srv/www.
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