Hello Linux Geeksters. As you may know, Brightness Indicator enables the users to control the screen brightness via a dedicated indicator from the applet.
In this article I will show you how to install Brightness Indicator on Ubuntu 13.10 Saucy Salamander, Ubuntu 13.04 Raring Ringtail, Ubuntu 12.10 Quantal Quetzal and Ubuntu 12.04 Precise Pangolin.
Because it is available via PPA, installing Brightness Indicator on the listed Ubuntu, Linux Mint, Pear OS and Elementary OS systems is easy. All you have to do is add the ppa to your system, update the local repository index and install the indicator-brightness package. Like this:
$ sudo add-apt-repository ppa:indicator-brightness/ppa
$ sudo apt-get update
$ sudo apt-get install indicator-brightness