busybox network configuration script error - linux

Question

Hello I have the script in the start up but I don't get why it is showing error on execution
#!/bin/sh
# Starting the network interface
PATH="/sbin:/bin:/usr/bin:/usr/sbin"
FILENAME="/etc/ipconf"
count=0
while read LINE
do
ipValues[count]=$(echo $LINE | awk -F'=' '{print $2}')
count=`expr $count + 1`
done < $FILENAME
echo "Setting up IP Address"
ifconfig eth0 up
ifconfig eth0 ${ipValues[0]} netmask ${ipValues[1]}
echo "IP :: ${ipValues[0]} SUBNET MASK :: ${ipValues[1]}"
route add default gw ${ipValues[2]}
echo "Default Gateway :: ${ipValues[2]}"
echo "Network configured properly"
exit 0
Here is my ipconf file
IPADDRESS=192.168.1.13
SUBNETMASK=255.255.255.0
GATEWAY=192.168.1.220
And here is my scripts error
ipValues[count]=192.168.1.13 Not found
ipValues[count]=255.255.255.0 Not found
ipValues[count]=192.168.1.220 Not found
Setting up IP Address
Line 20 syntax error: Bad substitution
My script is braking in line ifconfig eth0 ${ipValues[0]} netmask ${ipValues[1]}. Is this array assignment is correct or busybox scripts needs different approach?

Answer 1

You're right, busybox doesn't support the array syntax in your script.
In order to set the values, you might use
eval ipValues$count=$(echo $LINE | awk -F'=' '{print $2}')
and to read the variables
ifconfig eth0 ${ipValues0} netmask ${ipValues1}
echo "IP :: ${ipValues0} SUBNET MASK :: ${ipValues1}"
route add default gw ${ipValues2}
echo "Default Gateway :: ${ipValues2}"