Installing ddate

ddate is a utility to display the Discordian date with a colorful history. It was removed from util-linux but the source code is still available on GitHub

source https://github.com/bo0ts/ddate

Click the “Download Zip” box on the left.

save / extract in ~/src

cd ~/src/ddate-master
cmake CMakeLists.txt
make
sudo make install

There is no uninstall script, so to remove,

sudo rm /usr/local/bin/ddate
sudo rm /usr/local/share/man/man1/ddate.1.gz

Source:http://blog.bodhizazen.net/linux/installing-ddate/