While Linux systems install with thousands of commands, bash also supplies a large number of “built-ins”—commands that are not sitting in the file system as separate files, but are part of bash itself ...

Using a function in bash allows you to create something in Linux that works as if it were a script within a script. Whenever the data being processed matches a set of conditions, your script can call ...

The first software that I was actually paid to develop was a 2-page shell script that prompted the user for a dozen or so pieces of information, before launching a set of cooperating processes. Those ...

and only files matching my_test_here would make it onto do_something. I love the while-read pattern, but it just doesn't feel right that there's no simpler, built-in, idiomatic way to write a function ...

Whether you do a lot of work in the Terminal or you just don't feel like opening iTunes and searching through your library, reader CamJN's fplay script will get you listening to music in seconds. The ...

Many bash scripts start out as something quick and dirty but then become so useful that they live for years, indeed sometimes seeing more use than our traditional programs. Now that you can even run ...

I've recently written about using bash arrays and bash regular expressions, so here's a more useful example of using them to test IP addresses for validity. To belabor the obvious: IP addresses are 32 ...