alt Hacker NewsThe lingua franca is actually the POSIX shell:
https://pubs.opengroup.org/onlinepubs/9699919799/utilities/V...
There is a bunch of bash that you should not learn. The differing coprocess syntax from korn is one particular bugbear. Still, if you are hacking on ReaR or other critical tools that sink deep into bash's slang, you don't have much choice.
I mean, yes, but 99% of deployments are going to be bash on some flavor of Linux.