Quicknet script

#!/bin/bash
#
# quicknet
#
# quickly set up for networking on specified interface & IP
#
# Date		Who			What/notes
# -----------	-----------------------	------------------------------------
# 26 Feb 2010	Aaron R. Kulkis		Original version
#
#
# Essence of program:
#   prompt and read INTERFACE
#     ifup $INTERFACE
#     ifconfig
#   prompt and read IP
#     ifconfig $INTERFACE $IP
#     ifconfig
#   prompt and read ROUTER
#     route add $ROUTER $INTERFACE
#     route
#     route add default gw $ROUTER $INTERFACE
#     route
#   ping ROUTER  (confirm connection to router)
#   ping 8.8.8.8 (Google open DNS host, confirms gateway operation))
#   ping www.google.com (confirms DNS operation)
#
#

SELF=`basename $0`

#
#### GET INTERFACE ##################
#

printf "Use which interface ? "
read INTERFACE

printf "execute ifup $INTERFACE ?"
read RESPONSE
case RESPONSE in
	y* | Y* )
	set -x
	ifup $INTERFACE
	ifconfig $INTERFACE
	set +x
	;;
esac


#
#### GET ADDRESS ##################
#

printf "What IP address for $INTERFACE ? "
read IP

printf "\nAttempting to configure $INTERFACE\n"
set -x ; ifconfig $INTERFACE $IP ; set +x

printf "\nPress return key" ; read A
set -x ; ifconfig $INTERFACE  ; set +x

#
#### DEFINE ROUTER ##################
#

printf "What is the name or IP address of the router/gateway? "
read ROUTER

printf "specifying path to router $ROUTER\n"
set -x ; route add $ROUTER $INTERFACE ; set +x

printf "\nPress return key" ; read A
printf "Verifying route added to route table\n"
set -x ; route ; set +x

printf "defining $ROUTER as the gateway.\n"
set -x ; route add default gw $ROUTER $INTERFACE ; set +x

printf "\nPress return key" ; read A
printf "Verify route added to route table\n"
set -x ; route ; set +x

#
#### VERIFY ROUTE COMPLETE ##################
#

printf "Verifiny that  route table complete:\n"
set -x ; route ; set +x

printf "test local network with 3 pings: "
 set -x; ping -c 3 $ROUTER ; set +x

printf "test routing by pinging Google public DNS servers 3 times each\n"
set -x
 ping -c 3 8.8.8.8
 ping -c 3 8.8.4.4
set +x

printf "Testing DNS functionality:\n pinging www.google.com 3 times\n"
set -x; ping -c 3 www.google.com ; set +x