zsh: zsh (the Z shell) zsh: zsh: Zsh is a UNIX command interpreter (shell) which of the standard shells zsh: most resembles the Korn shell (ksh), although it is not completely zsh: compatible. It includes enhancements of many types, notably in the zsh: command-line editor, options for customizing its behavior, filename zsh: globbing, features to make C-shell (csh) users feel more at home and zsh: extra features drawn from tcsh (another 'custom' shell). Zsh was zsh: written by Paul Falstad. zsh: zsh: