@anokasion@cawfee.club >DOS 4.0 Reviewing the sources of DOSv4.0, that is not free software - there is a bunch of *.EXE and *.LIB object code without source code (for example under src/LIB the sources have been removed and the MAKEFILE has been blanked). >VScode VSCode is proprietary software; https://code.visualstudio.com/license Although the non-corresponding source code for VSCode (with some of the spyware and malware omitted) has been published and VSCodium has been released, VSCodium is still proprietary software as it depends on the proprietary Electron; https://directory.fsf.org/wiki/Talk:Electron Furthermore, that is dependent on plugins to implement many languages and many of those plugins are proprietary. microsoft likes to give the appearance of "open sourcing", but they ensure the software is never even source-available. >if it's opening a X in the WSL background to render such applications, I do not know, sounds likely, and with the source available, it's another thing "the community" will be able to know. X is designed to work as a windowing server and allows for the software and the windowing server to run on different computers. There is a windows program that implements the X protocol, thus when the program running on GNU draws a button, window's GUI generates a button. microsofts schemes are working excellently, considering that microsoft did *not* publish the sources to "WSL2" - instead they published (partial) sources to "WSL1", which was GNU without Linux; https://mikegerwitz.com/2016/04/gnu-kwindows >you can't run startx or lightdm or any XDM You can in fact run a desktop environment - although that requires selecting a full window in which to display it (which VcXsrv does support), but that doesn't integrate with the windows desktop, thus the typical usage is standalone windows. >yes I'm using Bash because it's what I used since Slackware 10, only tried zsh You should use the best shell that respects your freedom, thus you should keep using GNU bash, but you should name the GNU and not call it "CLI". >My point was that you can change the shell to any as long it's POSIX compliant (fish, zsh, bash, etc.) GNU bash is not POSIX-compliant - although it is possible to change the shell to whatever on the GNU OS.