How does one start an Erlang OTP application and allow the passing of command-line arguments to the application's root supervisor?

Quick 1 liner: How does one start an OTP application and pass command-line args to it?

I wanted be able to start an OTP application in a generic "UNIX" way, being able to pass command-line arguments parsed by getopts. So, I have an erlang escript which uses the getopt library to handle parsing of command-line arguments.

shino's answer got me on the right path:

1. I have my escript do the getopts parsing
2. The escript then loads the application description into memory with application:load/1
3. I then use application:set_env/3 to store the CLI args
4. Now, launch the application with application:start/2
5. Once the application launches, the arguments can be accessed via application:get_env/2

You can also override application environment settings on the command line:

erl -myapp foo bar ...

This will set application.get_env(myapp, foo) to "bar", overriding any app.config setting.