script -r estatica 172.26.0.35

auto lo
iface lo inet loopback

iface eth0 inet dhcp

#/bin/bash
# Author: Joshua Bailey
# Name: netHome
# Syntax: netHome
# Summary: used to fix your network settings after
# changing them for another location (or dhcp)
 
function getCurIP
{
 # $1 should be the device
 ifconfig $1 | grep inet > ~/ip.find
 cat ~/ip.find | awk '{print $2}' > ~/ip.find
 CUR_IP=`cat ~/ip.find`
 CUR_IP=${CUR_IP:5:${#CUR_IP}-5}
 rm ~/ip.find
}
 
# setting the domain name
read -p "Please input your domainname (`domainname`): " DMN
if [[ ${#DMN} == 0 ]]
then
 DMN=`domainname`
fi
# end setting domain name
 
# setting the hostname
read -p "Please input your hostname (`hostname`): " HSN
if [[ ${#HSN} == 0 ]]
then
 HSN=`hostname`
fi
# end setting hostname
 
# setting the device
read -p "Please input your the device you will be using (eth0): " DEV
if [[ ${#DEV} == 0 ]]
then
 DEV=eth0
fi
# end setting device
 
# get the current ip
getCurIP $DEV
 
# setting the ip
read -p "Please input your chosen IP for this machine ($CUR_IP): " IP
 
if [[ ${#IP} == 0 ]]
then
 IP=$CUR_IP
fi
 
ifconfig $DEV up
ifconfig eth0 | grep $IP > /var/null
 
if [[ $? != 0 ]]
then
 ifconfig $DEV down
 echo "*** IP not set ***"
 echo "*** Setting ***"
 ifconfig $DEV $IP
 ifconfig $DEV up
else
 echo "*** IP matches ***"
 echo "*** No changes made ***"
fi
# end setting the ip
 
# setting the default gateway
echo "*** Checking default gateway ***"
echo "*** This may take some time ***"
echo "*** Please wait ***"
 
route > ~/test.route
cat ~/test.route | awk '{if ($1 == "default") print $2;}' > ~/test2.route
CUR_DEF=`cat ~/test2.route`
read -p "Please input your default gateway ($CUR_DEF): " DEF
 
if [[ ${#DEF} == 0 ]]
then
 DEF=$CUR_DEF
fi
 
cat ~/test.route | awk -v GW=$DEF '{if ($2 == GW) print $2;}' > ~/found.route
FOUNDIT=`cat ~/found.route`
 
if [[ $FOUNDIT == $DEF ]]
then
 echo "*** Default gateway matches ***"
 echo "*** No changes made ***"
else
 route del default 2> /dev/null
 # route add default gw $DEF dev $DEV
 echo "*** Default gateway set ***"
fi
 
rm -f ~/*.route
# end setting the default gateway
 
# begin setting dns
grep search /etc/resolv.conf >~/search.dns
TEMP=`grep -n nameserver /etc/resolv.conf`
echo $TEMP > nameserver.dns
 
cat ~/search.dns | awk '{print $2;}' > ~/search.dns
CUR_PRIM=`echo $TEMP | awk '{print $2}'`
CUR_SEC=`echo $TEMP | awk '{print $4}'`
 
read -p "Please input your primary dns ip ($CUR_PRIM): " PRIM
if [[ ${#PRIM} == 0 ]]
then
 PRIM=$CUR_PRIM
fi
 
read -p "Please input your secondary dns ip ($CUR_SEC): " SEC
if [[ ${#SEC} == 0 ]]
then
 SEC=$CUR_SEC
fi
 
 
 
echo "*** Checking DNS entries ***"
CON=`cat /etc/resolv.conf | grep $DMN`
CON2=`cat /etc/resolv.conf | grep $PRIM`
CON3=`cat /etc/resolv.conf | grep $SEC`
if [[ ! ${#CON} -gt 0 || ! ${#CON2} -gt 0 || ! ${#CON3} -gt 0 ]]
then
 echo "*** Editing /etc/resolv.conf ***"
 echo "search $DMN" > /etc/resolv.conf
 echo "nameserver $PRIM" >> /etc/resolv.conf
 echo "nameserver $SEC" >> /etc/resolv.conf
else
 echo "*** All DNS entries match ***"
 echo "*** No changes made ***"
fi
# end setting dns