Whether you’re managing a network at work or just watching out for your home systems, it’s important to understand your network connections–how you communicate with public systems and those on the local network. This article covers some of the most important commands available on Linux to help you get a clear understanding of your local network and how it reaches outside.
While the links provided include important tips on using network commands, some include commands that have been deprecated in favor of newer commands. Some of the most important commands to know today include ip a, ip neigh, ping, tracepath, dig, tcpdump and whois.
Source:: Network World – Linux