In the 23/4/2020 lecture recording, I noticed that you were using iTerm2 on MacOSX and
managed to get it to recognise and automatically colour variables, commands, strings etc
for easy readability by either:
1. adding this shebang to the header: #!/bin/bash. or
2. adding the .sh extension to a shell file
I haven't managed to replicate this sucessfully.
Where am I going wrong? Can you please provide further instruction?