How to pass options to the booted system via PXECONFIG script

[knatesan]

Thanks for the response! i dont want to get in to shell.
Let me reiterate my situation:
1. I have a start up script"xyz.sh" that loads automatically when it PXE boots-
- for this i have placed my script"xyz.sh" in /etc/rc.local
2. Now i need to pass one dynamic file"abc.txt" to the pxebooted kernel so that my script can parse it.
- i need to put this in some folder after it pxeboots.
Any clue or recommendations?
Note: "xyz.sh" file is a static file and "abc.txt" is a dynamic file which i can place it in nfsshare folder.