Back when I worked in the Network Operations department at one of my previous jobs, we used to chuckle when a customer would call us reporting that “the Internet is down.” Now, I realize that there ...

This column is the second in a series dedicated to one of my favorite subjects: troubleshooting. Because my column is generally aimed more at tips and tricks and less on philosophy and design, I'm not ...

Troubleshooting anything comes with its own set of challenges, and in the case of Linux and Unix, it’s helpful to have a practical guide to the tools available to make the job easier. This is such a ...

I've been using Linux for what seems like forever. Over the years, I've noticed that I use the command line less and less, because the GUIs have just gotten so much better. Even still, there are ...

10 ways to check ports in Linux to help troubleshoot systems Your email has been sent System and network troubleshooting often involves checking and obtaining information about ports to ensure ...

This article is excerpted from the book DevOps Troubleshooting: Linux Server Best Practices and is reprinted by permission of publisher Pearson/Addison-Wesley Professional. Many different problems can ...

If network troubleshooting leads you to believe there's an issue with IPv6, you may need to shut down that protocol on your Linux machines. IPv6 offers a much larger addressing scheme than IPv4, which ...

Ubuntu’s included NetworkManager software aims to make your network connections “just work.” Nevertheless, sometimes thing go awry. There are times you have to adjust or change your connection ...

There are certain Linux commands I consider essential. They range from networking, troubleshooting, and file viewing. They're also easy enough for new users to learn. Even though I've been using Linux ...