script

#!/bin/bash

# Checking if the script is run with bash
if readlink /proc/$$/exe | grep -q "dash"; then
	echo "You need to run the script with bash instead of sh."
	exit
fi

# Checking if the script is run as root
if [ "$EUID" -ne 0 ]
  then echo "This script must be run as root."
  exit
fi

# Checking if the operating system is Debian 10
if cat /etc/*release | grep ^VERSION_ID | grep 10; then
	clear
    	echo "Bash script that can be used to install Java 8 on Debian 10 OS."
	sleep 1
	echo "Java 8 will be installed on this system in:"
	echo "3 seconds"
	sleep 1
	echo "2 seconds"
	sleep 1
	echo "1 second"
	sleep 1
	echo "Installing Java 8 now..."
	apt update
	apt upgrade -y
	apt install software-properties-common -y
	apt-add-repository 'deb http://security.debian.org/debian-security stretch/updates main'
	apt update
	apt install openjdk-8-jre-headless -y
	echo "Java 8 should be successfully installed on your system."
	java -version
	exit

 else
    echo "You are not using Debian 10."
    exit
 fi