Install Arduino IDE 1.6.x on Ubuntu

Hello this day I will show you how to install Arduino IDE especially Arduino 1.6.x, because of my arduino board is yun so I must install this version. This article describes the steps to install the Arduino IDE in Ubuntu 14.04 LTS (Trusty Tahr).
First you should download from Official Web Arduino. Choose the version you want, in this case I use arduino IDE version 1.6.4 64 Bit.
Extract the archive and move it to the /opt folder, in a terminal window enter:

cd ~/Downloads
tar -xJf arduino-1.6.4-linux64.tar.xz
sudo mv arduino-1.6.4 /opt

if you`re machine doesn`t have jdk, you must install it first:

sudo apt-get install openjdk-7-jre

To use the USB port the permissions need to be set to read and write with:

sudo chmod a+rw /dev/ttyACM0

If you use multiple Arduinos, you can use the same method, just raise the number of the port, e.g. /dev/ttyACM1.
Create a shortcut on the desktop:

cd ~/Desktop
ln -s /opt/arduino-1.6.4/arduino

Ubuntu opens executable text files with an editor instead of executing them. To be able  execute a file, open the ‘Files’ program from the launcher, go to menu ‘Edit’, ‘Preferences’, tab ‘Behavior’ and set ‘Executable Text Files’ to ‘Ask each time’.