http://www.apple.com/opensource/. There is a good selection of open-source code here that Apple is using on their machines. I downloaded the tarball of the zsh shell here: http://www.opensource.apple.com/source/zsh/zsh-55/zsh-4.3.11.tar.bz2. This was compiled very easily after I installed the ncurses-devel RPM from this location for Fedora 19: ftp://rpmfind.net/linux/fedora/linux/releases/19/Everything/x86_64/os/Packages/n/ncurses-devel-5.9-11.20130511.fc19.x86_64.rpm. Then I was able to complete the checks run by …