Useful for executable documentation or runbooks, whatever you call the next level above scripts. You check your scripts into source control but how do you invok

Useful for executable documentation or runbooks, whatever you call the next level above scripts. You check your scripts into source control but how do you invoke the script? Copy and paste the example? Type it by hand every time? There's no need to copy-paste from a README into a terminal when you can "send" it.