Ksh is an acronym that stands for "Korn shell" or "KornShell". It is a command line interpreter and scripting language primarily used in Unix-based operating systems. Ksh is derived from the Bourne shell (sh) and was developed by David Korn at Bell Labs in the early 1980s.
Ksh includes many extended features and improvements over the original Bourne shell, making it more powerful and user-friendly. It supports interactive as well as batch operation, and provides features like command history, advanced line editing capabilities, and an extensive set of built-in commands.
As a scripting language, ksh allows users to write shell scripts that can automate tasks and execute complex operations. It supports variables, conditionals, loops, functions, and input/output redirection, making it suitable for creating sophisticated scripts and managing system tasks.
Ksh is compatible with POSIX standards, which ensures that scripts written in ksh can typically be executed on different Unix systems without modifications. It has become a popular choice for system administrators, developers, and power users who seek a more advanced shell environment.
In summary, ksh is a command line interpreter and scripting language used in Unix-based systems. It provides enhanced features and functionality over the traditional Bourne shell, enabling users to write scripts that automate tasks and manage system operations efficiently.