The mkfile command comes bundled on macOS. It creates a file on your computer of any size you choose. It can be used to create temporary files for testing.
Learning how to use the following built-in array prototype methods has been deemed by some as the gateway drug to functional programming.
Disable Sleep with Caffeinate in MacOS
Caffeinate has been bundled with MacOS since 10.8 Mountain Lion.
To temporarily disable sleep, run the following command: