Simply put, a Shell Script is a program that is run by a UNIX/Linux shell. It is a file that contains a series of commands which are executed sequentially as if they were entered on the command line ...

The command-line interface (CLI) is the cornerstone of interacting with the Linux operating system. It allows users to enter commands directly, offering greater control and flexibility compared to ...

It is easy to dismiss bash — the typical Linux shell program — as just a command prompt that allows scripting. Bash, however, is a full-blown programming language. I wouldn’t pres… ...

You can use the set -x command to do some script debugging. In other words, when you use this option, bash is going to show you a lot more output that displays what your script is up to.

Bash scripting commands are as varied as the command set that Unix's terminal has. Bash commands can also use parameters, expanding their usability and making them a powerful way of controlling Linux.

The eval command allows you to run the contents of variables as commands and can be very useful -- especially in scripts.

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 Prentice Hall, all rights ...

To do that, the command would be: watch free The free command will run every 2 seconds, displaying the output in the terminal, so you don’t have to keep running the command (Figure B). Figure B ...