Quick answer: File permissions (chmod, chown), user/group management, pipes (|), wildcards (*,?), directory structure (/home, /etc, /var), package managers (apt, yum), sudo. You need these daily for VPS & root servers.
If you landed here: Quick overview and FAQ on Server Administration – practical hosting guidance for Germany (Frankfurt).
Server Administration
Linux basics, user management, firewalls, SSH security and cronjobs – everything you need for day-to-day server administration.
Available guides:
- Cronjobs – Schedule Tasks Automatically
- Firewalls with iptables and ufw
- Linux Basics for Beginners
- Managing Users and Permissions on Linux
- Using SSH Keys Instead of Passwords
Select the relevant article from the menu on the left to go directly to the guide you need.