hostname_check.sh

#!/bin/bash

# Check if user is root
if [ "$EUID" -ne 0 ]
  then echo "Please run as root"
  exit
fi

# Clear screen
reset

# Setup Hostname
read -p "Choose your new host name: " hostname_new
read -r hostname_old < /etc/hostname
sed -i "s/$hostname_old/$hostname_new/g" /etc/hostname
sed -i "s/$hostname_old/$hostname_new/g" /etc/hosts


# Finishing u
echo "+---------------------------------------------------------------------+"
echo "|                         Congratulation!                             |"
echo "|                      Your install is done.                          |"
echo "|                 Your HOSTNAME is $hostname_new                      |"
echo "|            This installer was brought to you by AllGray!            |"
echo "+---------------------------------------------------------------------+"