Strange that PowerPoint was used for the slides. That's pretty much at the complete opposite end of the software spectrum to GNU Bash.

The slides look to me a lot closer to laTex beamer than PowerPoint.

Edit: I take it back, the PDF metadata says:

Creator: PowerPoint

Producer: Mac OS X 10.4.8 Quartz PDFContext

It was done in keynote on a mac in 2006. I still maintain the 2025 version in keynote on a mac.

Maybe it was written on OpenOffice or something and saved to ppt(x)? The linked file is PDF though.

Thanks to WSL, bash is ̶a̶v̶a̶i̶l̶a̶b̶l̶e̶ ̶o̶n̶ shipped with Windows.

Git also ships bash for windows and doesn't require WSL. Can be even set as a default shell for OpenSSH so you can just ssh into windows bash...

bash has been available on Windows since at least before the mid '90s.

Yes I remember using cygwin back in 2004ish to provide bash when I had to use a windows pc at work (very briefly)

I was a co-op at a company in the 90s that specialzed in mechanical simulation of virtual prototypes. The software was primarily used on Unix (most of us used SGI boxes) but there was also a Windows port for smaller jobs and laptop use and (at least the dev environment) was all built on Cygwin.