This ticket is the manifestation of http://groups.google.com/group/mongodb-dev/browse_thread/thread/37493c13806b72da

All options in all mongo commands should adhere to lowerCamelCase. Unless this is done in one fell swoop for all executables created by mongod, one ticket should be made for each executable.

The current casing of the command line arguments need to remain until the ????(initial release| of 1.8 | first stable release after 1.8). While the old options exist using them should invoke the following message:

log() << '"' << oldOption << "\" has been deprecated in favor of \"" << newOption << ".\"" << endl;