On Tue, 2021-03-09 at 14:11 -0700, Warren Young wrote: > > Solaris 10 dates from early 2005. We gave it 16 years of direct > support, and now it’s on a sort of “extended” support if you point > Autoconf configure scripts at a reasonable shell. > I didn't realize it was that "recent." I'm typing this on a PC (and OS install) older than that. Digging through The Open Group archives shows that the $(...) syntax was standardized no later than 1997, making me less sympathetic than I was originally.
