Q: What is your background, and how did you get into Linux? A: I worked as a professional musician for a few years before launching my career as a Unix and Linux System Engineer in 1999. I’ve been privileged to use my Linux skills at Xerox, UPS, Hewlett-Packard, Amazon.com, and other great organizations. Early in … Read more
In this lesson on the Linux sed command, you’ll learn how to: Perform text substitutions. Remove text from a stream. Perform in-place edits while preserving the original data as a backup. Use sed addresses to work on very specific sections of input. And much more… This lesson is just one of the 55 shell scripting … Read more
My Personal Experience with Linux I’ve used Linux on my personal computers since as early as 1995 or 1996 and started working with Linux professionally in 1999. I was immediately drawn to Linux. It was love at first sight for me. The Linux design and philosophy made total sense to me, and I wanted to … Read more
If you’ve come here looking to fix an errant recursive chmod or chown command on an RPM-based Linux system, then here is the quick solution. Run the following commands using root privileges: The –setugids option to the rpm command sets user/group ownership of files in a given package. By using the -a option we’re telling … Read more
In this video tutorial and cheat sheet, you’ll learn how to: See exactly what processes are running on a Linux system Stop the execution of commands and processes Background a process or a command And much more…
Here is a spreadsheet that summarizes the most popular Linux certifications. In it, you’ll find: How long each Linux certification lasts. Which exams you’ll need to pass in order to be Linux certified. The approximate cost of training required to become certified. There are many Linux certifications, so here’s my recommendation: Study for, take, and … Read more