The Debian/Ubuntu package manager isn't just for installing and removing software. You'll find there are some other tricks up Apt's sleeve that you should know about.

When something is running on a system, whether it is a process, a service, or something bound to a port, there is always a cause. That cause is often indirect, non-obvious, or spread across multiple ...

This app lets you transfer files across various devices without compression.

An old book about an even older operating system.