#!/bin/bash
# Licence : GPL v3
# Author: Laurent HUBERT
#
# Changes the machine hostname
#
cat <<EOF
##############################
# Changing hostname          #
##############################
EOF
read -p "Please enter new hostname: " answer

if [ -n "$answer" ]
then
  echo Changing hostname to $answer
  current=$(hostname)
  sed -i.firstboot.backup s/$current/$answer/g /etc/hostname
  sed -i.firstboot.backup s/$current/$answer/g /etc/hosts
  hostname $answer
  exit 0
else
  # Exit with non zero status
  exit 1
fi