Mac OS X StartupItem script (can be generalized)

gistfile1.sh

#!/bin/sh

##
# Diary service startup script 
##

. /etc/rc.common

StartService ()
{
    ConsoleMessage "Starting Diary"
    cd /Users/kghose/Source/Jabda/
    /Library/Frameworks/Python.framework/Versions/2.6/bin/python pylog.py &
    echo $! > jabda.pid
}

StopService ()
{
    cd /Users/kghose/Source/Jabda/
    if pid=`cat jabda.pid`; then
    ConsoleMessage "Stopping Diary"
    kill -TERM "${pid}"
    rm jabda.pid
    else
    ConsoleMessage "Diary not running"
    fi
}

RestartService ()
{
    ConsoleMessage "Restarting Diary"
    StopService
    StartService
}

RunService "$1"

The StartupItems specification requires that the executable file has the same name as the subdirectory that contains it and that the executable is in the root level of subdirectory