Shell Programming and Scripting

You're just appending by using the redirect output (>>), you need to look at sed, and search for the area where you want the chunk of text. Man sed or look at examples online to do so.

I've taken what you guys supplied and another post I found elsewhere and combined it with some sed to make it work the way i want it to. Put this at the end of your ks.cfg file in a %pre section and it will ask you for the network information:

%pre
#!/bin/sh


chvt 3
echo "--Static Network Configuration--"
echo -en "What is the IP Address? : "
read ip

echo -en "What is the Netmask? : "
read netmask

echo -en "What is the Hostname? : "
read host

echo -en "What is the Gateway? : "
read gateway

echo -en "What is the Name Server?"
read nameserver

line="network --bootproto static --ip $ip --netmask $netmask -hostname -host --gateway $ga teway --nameserver $nameserver"
751 ks="/tmp/ks.cfg"
752 sed -e "/^network/s/^network.*/$line/" $ks > ${ks}.tmp && mv ${ks}.tmp $ks

note: line, ks, and sed are all their own line
should read
line=
ks=
sed

I modified my script even further to ask user to verify input and if correct break out and if not then ask for the information again.

--------------------------------------------
#!/bin/bash
clear
while true; do
echo "Enter Network Configuration"
echo "---------------------------"
echo " "
echo -en "Enter Network Device (eth0,eth1) : "
read device

echo -en "Enter the Hostname? : "
read host

echo -en "Enter the IP Address? : "
read ip

echo -en "Enter the Netmask? : "
read netmask

echo -en "Enter the Gateway? : "
read gateway

echo -e ""
echo -e "Please Review Your Entries "
echo -e "--------------------------"
echo -e "Network Device : $device"
echo -e "Hostname : $host"
echo -e "IP Address : $ip"
echo -e "Netmask : $netmask"
echo -e "Gateway : $gateway"
echo -e " "
echo -en "Does Everything Look Correct? (y/n) "
read yn
case $yn in
y* | Y* ) line="network --bootproto static --device $device --ip $ip --netmask $netmask --hostname $host --gateway $gateway"
ks="/tmp/ks.cfg"
sed -e "/^network/s/^network.*/$line/" $ks > ${ks}.tmp && mv ${ks}.tmp $ks; break;;
[nN]* ) echo -e "Renter Your Information" ; continue;;
q* ) exit ;;
* ) echo "Enter yes or no" ;;
esac
done