#!/bin/bash

nbpc=0
echo " ======================================== "
echo " ! LANCEZ CE SCRIPT EN ROOT !             " 
echo "   \$ sudo -i                             "
echo "   Les actions suivantes ne pourront      "
echo "   etre realisees dans le cas contraire : "
echo "      - modification de l'adresse MAC     "
echo " =======================================  "

echo "Entrez le numero du pc"
read nbpc

nbpc=$(echo $nbpc | bc)

if [ $nbpc -lt 10 ]
then
 nbpc="0$nbpc"
fi

service network-manager stop
echo " =================================== " 
echo "  Modification du nom de la machine : "
echo    DesclicksXub$nbpc
echo " =================================== "
name=DesclicksXub${nbpc}
echo -e "${name}\n" > /etc/hostname
hostname ${name}
sed -e "s/^127.0.1.1\s*\(Desclicks\|cyberlis\).*/127.0.1.1       ${name}/" -i /etc/hosts

echo " =================================== " 
echo "  Modification de l adresse MAC"
echo " =================================== " 

eth=`ip link show | grep -o eth[0-9][0-9]*`
echo ip link set dev $eth address 00:00:00:00:0D:$nbpc
ip link set dev $eth address 00:00:00:00:0D:$nbpc

if grep -qe '^hwaddress ether' /etc/network/interfaces
then
sed -e "s/\(hwaddress ether\).*/\1 00:00:00:00:0d:$nbpc/" -i /etc/network/interfaces
else
echo -e "hwaddress ether 00:00:00:00:0d:$nbpc\n" >> /etc/network/interfaces
fi 
service network-manager start