(features.info)Korn Shell Features

Korn Shell Style Features
*************************

   This section describes features primarily inspired by the Korn Shell
(`ksh').  In some cases, the Posix 1003.2 standard has adopted these
commands and variables from the Korn Shell; Bash implements those
features using the Posix standard as a guide.



* Korn Shell Constructs
Shell grammar constructs adopted from the
Korn Shell
* Korn Shell Builtins
Builtin commands adopted from the Korn Shell.
* Korn Shell Variables
Variables which bash uses in essentially
the same way as the Korn Shell.
* Aliases
Substituting one command for another.