Resources

GUI, TUI, and CLI

https://askubuntu.com/questions/867416/are-there-differences-between-cli-and-tui
https://www.reddit.com/r/commandline/comments/pn69g0/difference_between_cli_and_tui_programs/
https://itsfoss.com/gui-cli-tui/
https://antarjaal.in/en/2020/11/gui-vs-cli-vs-tui/
https://www.reddit.com/r/commandline/comments/gtsgna/when_did_cli_become_tui/
https://en.wikipedia.org/wiki/Text-based_user_interface
https://en.wikipedia.org/wiki/Command-line_interface
https://en.wikipedia.org/wiki/Graphical_user_interface

*nix terminal file managers

https://www.tecmint.com/linux-terminal-file-managers/
https://www.fosslinux.com/7413/5-best-linux-console-file-managers.htm
https://www.linuxlinks.com/BestConsoleFileManagers/
https://computingforgeeks.com/best-terminal-file-managers-for-linux/
https://wiki.archlinux.org/title/List_of_applications/Utilities#File_managers

KISS Principle

http://www.softpanorama.org/SE/kiss.shtml
https://wiki.archlinux.org/title/Arch_terminology#KISS
https://en.wikipedia.org/wiki/KISS_principle

Orthodox File Managers

http://www.softpanorama.org/OFM/Standards/index.shtml

*nix file naming conventions

https://dwheeler.com/essays/fixing-unix-linux-filenames.html#standards
http://www.linfo.org/file_name.html
https://www.december.com/unix/tutor/filenames.html
https://superuser.com/questions/358855/what-characters-are-safe-in-cross-platform-file-names-for-linux-windows-and-os
https://stackoverflow.com/questions/457994/what-characters-should-be-restricted-from-a-unix-file-name
https://www.mtu.edu/umc/services/websites/writing/characters-avoid/
https://www.cyberciti.biz/faq/linuxunix-rules-for-naming-file-and-directory-names/
https://www.cyberciti.biz/faq/linux-file-names/