There's a "-version" option for bash, but not in "/bin/sh". Is there a way to check the /bin/sh version?
$/bin/bash -version
GNU bash, version 3.2.57(1)-release (i386-pc-solaris2.10)
Copyright (C) 2007 Free Software Foundation, Inc.
$/bin/sh -version
-version: bad option(s)
$file /bin/sh
/bin/sh: ELF 32-bit LSB executable 80386 Version 1, dynamically linked, stripped