Introduction to zsh Download location (HTTP): Download location (FTP): Version used: &zsh-version; Package size: &zsh-size; Estimated Disk space required: &zsh-buildsize; Estimated build time: &zsh-time; The zsh package contains the zsh shell. zsh is a command interpreter (shell) usable as an interactive login shell and as a shell script command processor. Of the standard shells, zsh most closely resembles ksh but includes many enhancements.