[rgoulter]

Many command line programs keep their configurations somewhere under $HOME. These are often called "dotfiles".

If you ever use more than one machine, likely you'll want the same configuration available on all those machines.. so you'll want some way to copy them to a new machine.

Some dotfile managers are quite simple, like dotbot. https://github.com/anishathalye/dotbot

Home Manager from the Nix community is a bit more sophisticated. It allows for writing configurations in the Nix language, which is nice if you know/like Nix. (Nix is a powerful/expressive package manager. Nix is to apt-get what vim is to notepad).