Bourne Shell
Portable Shell Syntax is the scripting language syntax used by the System V Bourne shell. This syntax is compatible with the heirloom shell and is the syntax documented in most Unix books.
Bourne Shell is an implementation of UNIX Shell.
Other implementations of UNIX Shell.
The Bourne Shell is a UNIX shell upon which many shells are based; notably ksh and bash. (The other major tree of UNIX shells descend from csh)
A Bourne Shell script begins with a hashbang like this, that tells the operating system to use the Bourne compatible shell interpreter:
#!/bin/sh
Computerworld just published an in-depth interview with Steve Bourne The A-Z of Programming Languages: Bourne shell, or sh which details the Bourne shell origins and design decisions.