This utility displays text-based cheatsheets (that you wrote yourself) in your terminal.
If you set your CHEATSHEET_DIR environment variable, that will be used to
find your cheatsheets. Otherwise cheat will look in your home directory.
Let's create a cheatsheet for cheat as an example.
Create the file cheat.txt in your home directory or the directory your
CHEATSHEET_DIR environment variable points to (if you set it) and put the
following contents inside:
USAGE: cheat <subject>
Now run the command cheat cheat where the first 'cheat' is the application,
and the second 'cheat' is the filename without the .txt extension you
want to display.
This should print the contents of the file you just created.
cheat <subject>