Using Shell Scripts with KM

[JMichaelTX]

@CJK

Arguably, it takes a lot less research to learn shell commands,

@CJK, here is one of the things that makes shell scripting so hard:

Impact of macOS Catalina Defaulting to Unix Shell using Zsh

IMO, you should: Always define which shell you want to use with a "shebang" such as #!/usr/bin/env zsh -f. Anticipate a day in which bash is no longer installed at /bin/bash (or at all) and use #!/usr/bin/env bash as the shebang if you have a bash-specific script. That way if you add bash via Homebrew and it ends up at /usr/local/bin/bash then your bash script can still work. Migrate to zsh whenever possible because it will continue to be installed by default even if bash is not.

Fortunately, @tjluoma provided excellent instructions just below this on what it means, and how to construct and use it. Without those instructions, I'd be totally lost.