How do I determine where a process is being started from, and disable it? When I start OS X (Mavericks) and run ps aux | grep postgres from Terminal, I have a process that was automatically started:

postgres          132   0.0  0.1  2526456   7936   ??  Ss   10:04PM   0:00.07 /Library/PostgreSQL/9.2/bin/postmaster -D/Library/PostgreSQL/9.2/data


This is a problem because I recently installed HomeBrew's version of Postgres and want that to be the postgres that is always running.  However, I can't figure out how to disable the old one (above) and it is driving me crazy! I've looked for launch agents in: 

~/Library/LaunchAgents
/Library/LaunchAgents
/Library/LaunchDaemons
/Library/StartupItems
/System/Library/LaunchAgents
/System/Library/LaunchDaemons


and can't seem to find one matching the above... any ideas?
The related launchd job ticket was found in /Library/LaunchDaemons.

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