Don't blindly believe everything you read online, tempting as that is. Do your homework first. This video series will help you do it well: https://www.youtube.com/playlist?list=PL8dPuuaLjXtN07XYqqWSKpPrtNDiCHTzU
CDE was commercial software born in the Unix Wars, so it was expected to have an integrated online user-oriented manual. One that's complete, comprehensive, and written for the end user, accessible from a very lightweight hypertext browser utility, is a high standard programmers and technical writers should strive for even today.
I am presently torturing myself with CDE. It's in FreeBSD's pkg repo and ports tree, and it provides a functional desktop, but it's too broken to be usable. The right-click menu is often incomplete, some tools crash and dump core, and Information Manager errors out with a configuration-related error message the 'Net has never written about.
That last one is sad because its command, dtinfo, runs just fine from the terminal emulator and reveals a complete and comprehensive help system library.
So apparently Fred Rogers Productions just started a new YouTube channel where they'll be uploading every episode of Mister Rogers' Neighborhood
https://youtube.com/@misterrogersneighborhood?si=o9FcfHuBHytiwKZt
Some POSIX #ShellScripting resources I've had bookmarked since before the question #WhyTheFuckDoesAIHaveToRuinEverything needed to be asked:
Rich’s sh (POSIX shell) tricks: https://www.etalabs.net/sh_tricks.html
GitHub - dylanaraps/pure-sh-bible: 📖 A collection of pure POSIX sh alternatives to external processes. · GitHub: https://github.com/dylanaraps/pure-sh-bible
POSIX Shell Tutorial: https://www.grymoire.com/Unix/Sh.html
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