Jack Wallen shows how you can create a Linux shell script that requires a password without having to save a password within the script. Linux is the most flexible ...

Linux, known for its robustness and flexibility, has been a favorite among developers, system administrators, and technology enthusiasts. One of the pillars of Linux's capabilities is its inherent ...

Imagine that you want to output multiple lines of text in Bash, or any shell script. Maybe it’s for a help string for a particularly convoluted shell script you’re writing. You could have a separate ...

You normally think of a critical section — that is, a piece of a program that excludes other programs from using a resource — as a pretty advanced technique. You certainly don’t often think of them as ...

If you're working in a Linux environment, chances are you've encountered environment variables—even if you didn’t realize it at the time. They quietly power much of what goes on behind the scenes in ...

Don't fear the command line if you want to unlock Linux's true potential.

Finally a terminal that treats modern Linux tools as the baseline, not an afterthought.

This article is reprinted from the book A Practical Guide to Linux Commands, Editors, and Shell Programming 3rd edition, with permission of the author and publisher ...

The developers of Ubuntu Linux have worked hard to make their operating system easy for businesses to set up, use and maintain. There are still occasions, however, when a member of your Information ...