I use this in my .bashrc so I can start/stop homebrew installed daemons via a 3 letter prefix. ``start mys'' for mysql. ``stop red'' for redis, etc.

homebrew_launchctl.bash

simple_launchctl() {
  command=$1
  server=$2
  for plist in ~/Library/LaunchAgents/*.plist ; do
    if [[ `grep -c Cellar "${plist}"` -ne 0 ]] ; then
      abbrev=`echo $plist | sed -E -e 's/^.*\///' -e 's/^[[:alnum:]]*\.[[:alnum:]]*\.//' -e 's/\.plist$//' -e 's/([[:alnum:]][[:alnum:]][[:alnum:]]).*/\1/'`
      if [[ "$server" == "$abbrev" ]] ; then
        launchctl $command -w "${plist}"
        return
      fi
    fi
  done
}
start() { simple_launchctl "load" $1   ;}
stop()  { simple_launchctl "unload" $1 ;}

That's some serious bash/sed voodoo for saving typing two characters ;-)