Ok, I can't script my way out of a papper bag, so I need help with this.I declare some variables at the prompt:export catname=Fluffyexport dogname=SpotI make a no-executable file called text.dat ...

A special variable that I use with great frequency for helping create temporary file names is $$, which expands to the current process ID in the system. For example: $ echo $$ 3243 If you're doing a ...

Shell scripting is an often forgotten programming environment, relegated to simple automation tasks and little else. In fact, it’s possible to achieve much more complex tasks in the shell.

In plain old make you use them the same way you use curly braces in shell scripts. If it is in a shell script, then the the parenthesis signify subshell evaluation.

PowerShell scripters have a few choices in the editor they can use to write code. Options range from the PowerShell Integrated Script Environment, Visual Studio Code, Visual Studio, Notepad++ and more ...

GitHub Actions environment variables shell script The full list of 81 or so environment and system variables is further down in this article. But there’s always a chance that the list will get ...

Linux Journal, representing 25+ years of publication, is the original magazine of the global Open Source community.

Variables are just about the most ubiquitous element inside any PowerShell script. Variables can easily be created and referenced inside your script. But sometimes you just need to test to see if they ...

One of the features I like about PowerShell is automatic variables. Automatic variables save you time and provide a more consistent approach at figuring out what's going on under the hood of your ...