- https://blog.flowblok.id.au/2013-02/shell-startup-scripts.html
- https://zsh.sourceforge.io/Intro/intro_3.html
- https://www.gnu.org/software/bash/manual/html_node/Bash-Startup-Files.html
- https://github.com/mathiasbynens/dotfiles/blob/main/.macos settings for MacOS