PBS 153 – Bash: Functions & Scope

<p>In Programming By Stealth, we've come to the end of our journey with Bash. I'll be sad to have it complete because as I tell Bart in this episode, I've really enjoyed it. Next time he will do a final bow-tying episode where he brings everything we learned together in one set of notes as a handy reference guide.</p> <p>In this episode, he explains how functions work in Bash, and after about the 12th time he repeated it, I understand that functions we create in Bash work just like built-in functions such as `ls` or `cat`. </p> <p>After walking us through some easy-to-follow scripts to illustrate this and show us the syntax, we go into a harder concept: scope. We learn that Bash does scope differently from pretty much every other language, and so he teaches us how to avoid spooky action at a distance because of this different way of dealing with scope. Protecting ourselves isn't actually hard but it is very important to understand why we need to do this.</p> <p>You can find Bart's fabulous tutorial shownotes at <a href="https://pbs.bartificer.net/pbs153">pbs.bartificer.net</a>.</p>