Script Bourne Shell for install apps in the Android system after wipe data.
This tool is usefull for put preloading apps and this apps persist after hard reset.
You need add one native service to the 'init' resources call 'preinstall' for the init process.
The syntax for these .rc files is documented in a readme file in the source tree. See the Android init language reference.
See also http://www.androidenea.com/2009/08/init-process-and-initrc.html
See also http://droidcore.blogspot.com/2012/12/how-to-edit-initrc-in-android.html
The service run in the user space the script in the /system/bin folder on the device, this file is called preinstall.sh, these commands check always on init if exist the file /data/system/notfirstrun else this file is created for not run the complete script again.
All apps need put in the /system/preinstall folder and the script call the Package Manager in Android to install this apps.