Jon Steinhart [09/07/2021 20.04]:
o The shell as defined above is being used in ways
that are far more
complex than originally contemplated when Bourne created the original
syntax and semantics, much less the new features from kash adopted by
^^^^
the POSIX standards committee. The combination
of both the POSIX and
bash extensions to the Bourne shell exposes a new set of limitations
and issues such as performance.