runCommand -package:structured-cli -package:github-release -package:mongoDB -package:pandoc-plot -package:wai-app-static -package:quickcheck-state-machine -package:options -package:hledger -package:shake-plus is:exact -package:graphviz

Runs a command using the shell.
Given a list of command/action pairs, prompt the user to choose a command using dmenu and return the corresponding action.