What is Korn Shell?

KornShell (ksh) is a Unix shell which was developed by David Korn at Bell Labs in the early 1980s. It is an interactive command language and scripting language that provides a powerful and versatile environment for users to interact with the operating system. It combines features from other shells, such as the Bourne shell and C shell, and introduces its own improvements, including command aliasing, command-line editing, and job control. KornShell is commonly used for automating tasks, managing files, and executing commands on Unix-like systems.