I was about to comment with my usual 'why not PowerShell', but it seems the author acknowledges this anyway at the end:
> I’ll quote Rich’s sh (POSIX shell) tricks to end this:
> I am a strong believer that Bourne-derived languages are extremely bad, on the same order of badness as Perl, for programming, and consider programming sh for any purpose other than as a super-portable, lowest-common-denominator platform for build or bootstrap scripts and the like, as an extremely misguided endeavor