system environment/shells
- busybox - Statically linked binary providing simplified versions of system commands
 - busybox-anaconda - Version of busybox configured for use with anaconda
 - pdksh - A public domain shell implementing ksh-88
 - tcsh - An enhanced version of csh, the C shell.
 - zsh - A powerful interactive shell
 - zsh-html - Zsh shell manual in html format