Frankly I've extracted the 'linuxrc' from my 3.8.2 install and it looks like something poor:
Code:
#!/bin/sh
#
# $Id: linuxrc,v 1.11 2004/04/26 12:04:46 herbert Exp $

export PATH=/sbin:/bin

mount -nt proc proc proc
root=$(cat proc/sys/kernel/real-root-dev)
echo 256 > proc/sys/kernel/real-root-dev
mount -nt tmpfs tmpfs bin ||
        mount -nt ramfs ramfs bin
echo $root > bin/root
Maybe a useful file to hack is '/etc/init.d/knoppix-autoconfig'.
In it there is stuff like the colored kernel version prompt at boot:
Code:
KERNEL="$(uname -r)"
echo "${GREEN}Running Linux Kernel ${YELLOW}$KERNEL${GREEN}.${NORMAL}"