runCommand -package:options -package:shake -package:structured-cli -package:mongoDB is:exact -package:pandoc-plot -package:libmpd -package:github-release -package:cabal-install -package:process -package:hledger -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.