Change Hostname for Raspberry Pi Raspbian Wheezy OS. Fabio Nisci

changeHostname.sh

#!/bin/bash

echo "Change Hostname Permanently"
echo "Script by Fabio Nisci 2014"
echo "Enjoy."

# Only root can!
if [[ $EUID -ne 0 ]]; then
   echo "Run this script as  ROOT o SUDO" 1>&2
   exit 1
fi


#Assign existing hostname to $hostn
hostn=$(cat /etc/hostname)

#Display existing hostname
echo "Existing hostname is $hostn"

#Ask for new hostname $newhost
echo "Enter new hostname: "
read newhost

#change hostname in /etc/hosts & /etc/hostname
sed -i "s/$hostn/$newhost/g" /etc/hosts
sed -i "s/$hostn/$newhost/g" /etc/hostname

#display new hostname
echo "Your new hostname is $newhost"

#Press a key to reboot
read -s -n 1 -p "For Permanently change it, I need to reboot. Press any key when you are ready..."
reboot