Below are a couple quick tips/shortcuts to help you navigate the command line a little easier next time.

Auto-Complete Feature

Anytime you are entering a filename or file path, just click <TAB> and the shell will complete the path name for you.

If there are multiple files with the same letters that you have already entered, pressing <TAB> twice will list all the possibilities.

History Command

When you execute any command, that command is saved within a file in your home directory.

The history command functions in a couple of ways.

1. It allows you to click the up or down arrows to scroll through your previously used commands. When the command that you want appears, just click enter to execute.
2. You can enter the command 'history' into the Linux command line and the shell will present you with the entire list of commands executed for your current profile.