Korn shell
The Korn shell (ksh) is a Unix
shell developed by David Korn (AT&T Bell Laboratories). It is compatible with
the Bourne shell
and includes many features of the C
shell as well, such as a command history. For interactive use it provides
the ability to edit the command line in a WYSIWYG fashion patterned after the
vi and emacs
editors. It also includes built-in arithmetic evaluation and advanced scripting
functions similar to those used in more powerful programming
languages such as awk,
sed, and perl.
ksh aims to respect the Shell Language Standard (POSIX 1003.2 "Shell and Utilities Language Committee").
SKsh is an AmigaDOS-specific version and pdksh is a free Unix version.
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