Hello Linux Geeksters. As you may know, iPad Charge is an open-source tool that enables the users to charge their Apple devices via USB. 
While iPads and iPods do not get charged by default when they are plugged in via USB, the following devices can get charged, with the iPad Charge app: iPad, iPad2, iPad3, iPad4, iPad Mini, iPod Touch 2G, iPod Touch 3G, iPod Touch 4G, iPhone 3GS, iPhone 4, iPhone 4S and iPhone 5.
In this article I will show you how to install iPad Charge on Ubuntu 14.04 Trusty Tahr, Ubuntu 13.10 Saucy Salamander, Ubuntu 12.10 Quantal Quetzal, Ubuntu 12.04 Precise Pangolin, Linux Mint 16 Petra, Linux Mint 14 Nadia, Linux Mint 13 Maya and Elementary OS 0.2 Luna.
Because it is available via PPA, installing iPad Charge on the listed Ubuntu, Linux Mint 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 ipad-charge and libusb-1.0-0 packages. Like this:
$ sudo add-apt-repository ppa:heathbar/ipad-charge
$ sudo apt-get update
$ sudo apt-get install ipad-charge libusb-1.0-0
After the installation has been successfully installed, plug in your Apple device in an USB port, open a terminal and do:
$ ipad_charge
After the device has been charged, run the following command and unplug the device from the USB:
$ ipad_charge --off
via lffl.org