How to disable services auto startup if they are installed using home brew

Answer:

For services installed using home brew, usually they will tell you how to turn on/off auto start when you use the command, e.g.

# brew info redis

redis: stable 2.4.17, devel 2.6.0-rc7, HEAD

http://redis.io/

Not installed

https://github.com/mxcl/homebrew/commits/master/Library/Formula/redis.rb

==> Caveats
If this is your first install, automatically load on login with:
    mkdir -p ~/Library/LaunchAgents
    cp /usr/local/Cellar/redis/2.4.17/homebrew.mxcl.redis.plist ~/Library/LaunchAgents/
    launchctl load -w ~/Library/LaunchAgents/homebrew.mxcl.redis.plist

If this is an upgrade and you already have the homebrew.mxcl.redis.plist loaded:
    launchctl unload -w ~/Library/LaunchAgents/homebrew.mxcl.redis.plist
    cp /usr/local/Cellar/redis/2.4.17/homebrew.mxcl.redis.plist ~/Library/LaunchAgents/
    launchctl load -w ~/Library/LaunchAgents/homebrew.mxcl.redis.plist

  To start redis manually:
    redis-server /usr/local/etc/redis.conf

  To access the server:
    redis-cli