The most important networking command in Linux might be ping. This command lets you check if a remote machine is responding ...

Dig is a powerful and flexible tool for interrogating domain name system (DNS) servers. In this post, we’ll take a deep dive into how it works and what it can tell you. Dig is a powerful and flexible ...

The domain name system (DNS) hums along behind the scenes and, as with running water, we largely take it for granted. That this system just works is a testament to the hackers who designed and ...

Sudo lets you run any terminal command as another user — hence "substitute user" — but the default and most common use for it ...