27 Apr
2016
27 Apr
'16
7:59 p.m.
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 It was superseded in Version 7 AT&T UNIX by the Bourne shell, which inher- ited the name sh.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 BSDlicense 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