Install Arduino IDE on Raspberry Pi

Updated@2019-02-19:
Please check the updated post: Install Arduino IDE 1.8.8 on Raspberry Pi/Raspbian Stretch release 2018-11-13.

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To install Arduino IDE running on Raspberry Pi, enter the command:
$ sudo apt-get install arduino


After installed, you can start Arduino IDE from Start menu of Raspberry Pi desktop > Electronics > Arduino IDE.

Or enter the command in Terminal:
$ arduino

The install version is 1.0.1.

Cross post with Arduino-er.

Updated@2013-12-13: more details to Learn how to install the Arduino IDE on your Raspberry Pi so that you can write and upload programs onto an Arduino.

Updated@2016-01-07:
There is a thread on the Pi forum discussing installation of later versions of the Arduino IDE: Arduino_IDE-1.6.7/github on the Raspberry Pi