http://nkuz2tpok7ctwd5ueer5bytj3bm42vp7lgjcsnznal3stotg6vyaakyd.onion/rbm_templates.html
The first
argument is an error message. The second argument is an optional
exit code (default is 1). exec A function taking a command line as argument, to be executed in
the sources tree. The output of the command is returned, if the
exit code was 0.