Here are some other neat things that don’t exactly fit into the previous categories:
tmux allows you to have mulltiple sessions that you are ssh’d into at once. Kind of like having multiple tabs on the same browser. You can keep running something on one while working on something on another. Learn more about how to use tmux here
Github is also a useful tool.
Symlinks can also help you do things quicker.
Compressing files to make them easier to send.
Make an alias so you can log in to Colonial One more easily.
For loops in bash can be useful for repeatedly executing a UNIX command.