The two programs involved are `toilet` and `lolcat`. `toilet` is a program that takes text as input, and turns it into fancy multi-line letters. It has different "fonts" available for this purpose; all the available fonts are stored in the `/usr/share/figlet` directory. Here are just some examples:  Actually, `toilet` also has a built-in option to colour it, but it doesn't look very nice IMO, as the colour changes are too sudden:  `lolcat` is a program that takes some text, and prints the same text, but rainbow-coloured. Note that you need a terminal with 256-colour support (rather than just 16) for the desired effect. It can colour any text in rainbow:  (The wrapping at 80 characters is so that the lines don't get longer than the terminal width. `lolcat` starts looking weird when they do. And now, by combining these two, we can get fancy rainbow-coloured text!  Enjoy! :)

These parodies are actually pretty good! [Here's "We Didn't Start The Kernel", plus the rest of the playlist.](https://invidious.sethforprivacy.com/watch?v=5nZFuQVz-mY&list=PL6sYHytyKN2-X93TurF3JptW8qSVm0DzA&index=1)

Source: https://chaos.social/@skruffl/108786460105694818

Found this on Reddit a while back.