KornShell, often abbreviated as ksh, is a command-line shell developed by David Korn in the early 1980s. It is an enhanced version of the Bourne Shell and incorporates features from the C Shell and Bourne Again Shell (Bash). KornShell is known for its scripting capabilities, interactive features, and user-friendly enhancements, making it popular among system administrators and developers. One of the key features of KornShell is its support for advanced scripting techniques, including associative arrays and built-in arithmetic operations. It also offers command-line editing, job control, and a rich set of built-in commands, which contribute to its versatility and efficiency in managing system tasks and automating processes.