checkbashisms(1) on Linux
The text dc95d213079b, as Debian 11 (Bullseye) shipped it.
check for bashisms in /bin/sh scripts
Flags it lists
-
--early-fail -
--extra -
--force -
--help -
--newline -
--posix -
--version -
-e -
-f -
-h -
-n -
-p -
-v -
-x