As systems get larger and the number of users they support increases, it becomes more difficult to manage systems using only the old-fashioned UNIX /etc/passwd file. A common solution to this problem ...

There are a lot of really nice scripting languages available to Unix admins, but Perl is still one of my favorites for doing any work that involves regular expressions — any text that you can describe ...

I first heard of Perl when I was in middle school in the early 2000s. It was one of the world’s most versatile programming languages, dubbed the Swiss army knife of the Internet. But compared to its ...

Let's begin with a story. Here's what happened: my second book, coauthored with Dr Michael Moorhouse, finally was finished. I had spent an extra six months on it, which meant it now was at least six ...

There are numerous ways to redirect standard error in a Perl script. You can redirect the output from one particular command, you can combine standard error with ...

Most of our beloved tools, such as Slic3r, Cura or KISSlicer, offer scripting interfaces that help a great deal if your existing 3D printing toolchain has yet to learn how to produce decent results ...

Since I’m seldom in control of all the devices between myself and whatever system I am trying to reach, I often like to verify whether I will be able to connect to a particular port on the particular ...