>>> >The various *BSD's have & use the actual Bourne shell .... >>> > >>> > >> Which one? All the BSDs I know of use the Almquist Shell except for >> OpenBSD which uses a patched version of the Public Domain Korn Shell > > indeed, the man for sh(1) on freebsd 10.3 says (in part) > > HISTORY > A sh command, the Thompson shell, appeared in Version 1 > AT&T UNIX. It > was superseded in Version 7 AT&T UNIX by the Bourne shell, > which inher- > ited the name sh. > > This version of sh was rewritten in 1989 under the BSD > license after the > Bourne shell from AT&T System V Release 4 UNIX. > Interesting. Back in 1980 we called /bin/sh the Mashey shell. It did not have command substitution or other things we now take for granted. Bourne did that for us. So there's a version or two missing in history... Jack