ksh:tldr:2fd7c
The command "ksh" stands for Korn Shell.
Korn Shell is a command-line interpreter or shell for Unix-like operating systems. It was developed by David Korn at Bell Labs in the late 1980s as an extension of the Bourne Shell (sh), which is the default shell for most Unix systems.
When you execute the "ksh" command, it launches the Korn Shell and provides you with a command prompt where you can interact with the shell. You can then enter commands, run scripts, and perform various tasks using the features and capabilities provided by the Korn Shell.
The Korn Shell offers many advanced features compared to the original Bourne Shell, including command-line editing, history, job control, functions, conditional expressions, and more. It is known for its compatibility with the Bourne Shell syntax while adding improvements and enhancements.
Overall, the "ksh" command is used to start a Korn Shell session, allowing you to perform various tasks and execute commands within the shell environment.