Simple install script for Minecraft on Linux

install_minecraft.sh

#!/bin/bash

# YOU HAVE TO RUN WITH ROOT
# AND YOU NEED TO INSTALL JAVA FIRST
# You can install it on Debian/Ubuntu with: "sudo apt-get install openjdk-8-jre"

dir="/opt/minecraft"

# Script to make Install of Minecraft
makeInstall() {
    curl -O http://media-mcw.cursecdn.com/c/c5/Grass.png

	# Making the program icon
	if [ ! -f "/usr/share/applications/minecraft.desktop" ]; then
		cat >> /usr/share/applications/minecraft.desktop <<-EOL
		[Desktop Entry]
		Name=Minecraft
		Exec=minecraft
		Terminal=false
		Icon=/opt/minecraft/Grass.png
		Type=Application
		Categories=Games		
		EOL
	fi
	
	chmod +x /usr/share/applications/minecraft.desktop
	
	# Making the file for minecraft
	if [ ! -f "/usr/bin/minecraft" ]; then
		cat >> /usr/bin/minecraft <<-EOL
		#!/bin/bash
		
		cd /opt/minecraft
		java -jar minecraft.jar
		EOL
	
	fi
	
	chmod +x /usr/bin/minecraft

}


# Check if directory of Minecraft exist
if [ ! -d "/opt/minecraft" ]; then
	mkdir "$dir"
fi
cd "$dir"

# Checking if Minecraft is installed
mine="minecraft.jar"
if [ ! -f "$mine" ]; then
	echo "Downloading Minecraft client:"
	curl -O https://s3.amazonaws.com/Minecraft.Download/launcher/Minecraft.jar

	echo "Installing Minecraft to your computer:"
	makeInstall
fi


echo "So I believe everything is done. Happy gaming :)"

exit