runCommand -package:wai-app-static -package:libmpd -package:pandoc-plot -package:xmonad-contrib is:exact -package:process -package:io-streams -package:github-release -package:cabal-install -package:options

Run an external command on the specified DotRepr. Remember to use hSetBinaryMode on the Handle for the output function if necessary. If the command was unsuccessful, then a GraphvizException is thrown. For performance reasons, a temporary file is used to store the generated Dot code. As such, this is only suitable for local commands.
Run command against the database and return its result
Runs a command using the shell.