https://brennan.io/2015/01/16/write-a-shell-in-c/
https://github.com/mcombeau/minishell
https://github.com/kamalmarhubi/shell-workshop
https://github.com/codecrafters-io/build-your-own-x#build-your-own-shell
https://git.42l.fr/jorun/minishell/src/branch/leaks/src/parsing/parser/parser.c