《_实践大师：unix Shell编程篇》

引用:

最初由 blackspace 发布
[B]这是kornShell的。

真不明白，kornShell和bsh是什么关系！ [/B]

引用:

bsh
aka "Bourne" shell, written by Steve Bourne at AT&T Bell Labs for the very earliest versions of Unix. Very small, very simple, and very few internal commands, so it called external programs for even the simplest of tasks. The big advantage is that it is always available on everything that looks vaguely like Unix.

ksh
The "Korn" shell, written by David Korn of AT&T Bell Labs (now Lucent). Written as a major upgrade to "sh", it is compatible with it, but has many more internal commands for the most frequently used functions. It also incorporates most of the same features from tcsh which enhance interactive use (command line history recall etc.). This shell is now available on most systems. It was slow
to gain acceptance because earlier versions were encumbered by AT&T licensing.