I realize this might throw a spanner into the editorial works here at Linux Journal, but after a two-month sidetrack on how to analyze letter usage in English to give you an edge in Hangman (yeah, I ...

#!/bin/bash clear echo "Hello world!" The first line tells the operating system what shell to use to interpret the script and the location of the shell. Double quotes do not prevent Bash from ...

The shell does far more than run commands. Here’s how Bash expands your input behind the scenes so you can write cleaner, ...

The Linux set command allows you to change the value of shell options or to display the names and values of shell variables. Rarely used, it is a bash builtin, but is quite a bit more complicated than ...

I am writing a bash script that will accept multiple arguments. My goal is to loop thru all the arguments and display them one by one. If I have a $counter ...

You've heard of variables in PowerShell, right? How about reference variables? Maybe not. The reason is because a scripter can generally get by without them, but they do still have a purpose.

Shell builtins are commands that are loaded into memory when a shell — such as bash, sh, or zsh — is invoked. The reason for this is that keeping these commands in memory helps ensure that these ...

There I was, trying to come up with a topic for this column, when I did what I usually do when stumped: I sent a question out to my Twitter followers. This time, I got a great answer, from John ...