The etcd configuration migration tool.
Run go get -u github.com/c2fo/gull/source/bin/gull to install the gull binary. After that, run gull to see usage information.
Run make at the c2fo/gull repo root to compile gull's source code and install a development build of the gull binary. Note that if you are developing gull, you will not be able to install via go get.
Check out the wiki for more information.