Jack Wallen

Jack Wallen introduces you to Linux environment variables. What are they and how are they set and unset?

Jack Wallen walks you through the process of connecting Zorin OS to Android for easy file sharing, SMS management and more.

Fail2ban should be on every one of your Linux servers. If you’ve yet to install it on either Rocky Linux or AlmaLinux, Jack Wallen is here to help you out with that.

Find out how to set up the powerful Checkmk monitor to keep tabs on all of your networked servers.

If you’re a Google Docs power user who works with a Chromebook, this is one handy tip you’ll want to implement.

Jack Wallen gives the latest version of Zorin OS a go and comes away with his mind sufficiently blown and a different opinion on what Linux distributions should be.

Docker announced a new subscription plan for enterprises and free access to Docker Desktop for personal use, educational institutions, non-commercial open-source projects and small businesses.

The tail command makes it easy to view log entries as they are written in real-time. Jack Wallen shows you how to make use of this indispensable tool.

If you frequently lose your tabs, Jack Wallen wants to remind you about pinned tabs and one behavior that can totally frustrate you with that feature.

If you need to generate quick SSL certificates for test servers and services, mkcert might be the fastest option available. Jack Wallen shows you how to use this handy tool.

If you deploy containers with Docker, at some point you’ll need to troubleshoot. Jack Wallen shows you how to do so with the logs command.

Ever wonder where Tux the penguin came from? Jack Wallen offers up a bit of a history lesson.