Mac

Find homedir in Finder

Go -> Home

See all files in folder

Command + shift + . (don't forget the dot)

See environmental variables

printenv

Create an environmental variable

Edit .bash_profile and add

export ENV_NAME="blah"

Setup cron

https://itprohelper.com/how-to-fix-cron-operation-not-permitted-error-in-macos/ 

Record screen

Command + shift + 5

file.sh:

#!/bin/sh