Images of shells by the sea

ksh – Unix shell

KornShell (ksh) is a Unix shell which was developed by David Korn at Bell Labs in the early 1980s.

This repository is used to develop bug fixes to the last stable release (93u+ 2012-08-01) of ksh93.

This is free and open source software.

Key Features

  • Job control, command aliasing, and command history designed after the corresponding C shell features.
  • Choice of three command line editing styles based on vi, Emacs, and Gosling Emacs
    associative arrays and built-in floating-point arithmetic operations (only available in the ksh93 version of KornShell).
  • Dynamic search for functions.
  • Mathematical functions.
  • Process substitution and process redirection.
  • C-language-like expressions.
  • Enhanced expression-oriented for and while loops.
  • Dynamic extensibility of (dynamically loaded) built-in commands.
  • Reference variables.
  • Hierarchically nested variables.
  • Variables can have member functions associated with them.
  • Object-oriented-programming.
  • Variables can be objects with member (sub-)variables and member methods.
  • Object methods are called with the object variable name followed (after a dot character) by the method name.
  • Special object methods are called on: object initialization or assignment, object abandonment (unset).
  • Composition and aggregation is available, as well as a form of inheritance.

Website: github.com/ksh93/ksh
Support:
Developer: Contributors to ksh 93u+m
License: Eclipse Public License, Version 2.0

ksh is written in C. Learn C with our recommended free books and free tutorials.


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