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One of the most powerful aspects of the command line is the ''shell script'' (known as the ''batch file'' on Windows), which lets you put a bunch of commands into a file and run them all at once. This can be especially useful if you want to run some commands every time you log in. Look up "startup scripts" on Windows, and the "bashrc" on Mac/Linux. Also, it might be time you learned [[Wikipedia:Emacs|Emacs]] or [[Wikipedia:Vim (text editor)|Vim]]. Anyway, where you go from here depends on your interests. Happy exploring!