Never install a higher version of python
than your system can support
If you're about to do that
Abort, abort, abort!

export PATH=${PATH}:

not:

export PATH=

What's a Pirate's favorite programming language?

Python.

It's really readable and flexible, and has great scientific packages, so most people are pretty fond of it.

The command I can't ever remember when I need it:
If the locatecommand doesn't find what you were looking for, use sudo updatedband try again