Package mksh

MirBSD enhanced version of the Korn Shell

https://www.mirbsd.org/mksh.htm

mksh is the MirBSD enhanced version of the Public Domain Korn shell (pdksh),
a bourne-compatible shell which is largely similar to the original AT&T Korn
shell. It includes bug fixes and feature improvements in order to produce a
modern, robust shell good for interactive and especially script use, being a
bourne shell replacement, pdksh successor and an alternative to the C shell.

General Commands (Section 1)
lksh
lksh is a command interpreter intended exclusively for running legacy shell scripts. It is built on mksh; refer to its manual page for details on the scripting...
mksh
mksh is a command interpreter intended for both interactive and shell script use. Its command language is a superset of the sh(C) shell language and largely...