Launchd Tools are for reading and creating launchd jobs.

For example, to see info about all Apple LaunchAgents and LaunchDaemons.

launchd2cmd /System/Library/Launch*/*

Or to create your own launchd job from an existing command:

cmd2launchd /usr/local/bin/daemond -d --mode foreground

Check it out here: https://github.com/kcrawford/launchd_tools