This article teaches you how to install iPhone apps using SSH instead of iTunes. This may be usable if you don’t have iTunes installed on your machine, or if you use a flatform like Linux which can’t have iTunes installed.

Find your application/game and download the .ipa file
Rename the .ipa file to xxx.zip(xxx is the name of the application/game)
Open the .zip file and extract it
You will see a xxx.app folder(xxx is the name of the application/game)
Transfer the xxx.app folder to your iphone via SSH to the /Applications folder
chmod 775 this …

There have been various versions of SSh installed by the various jailbreaking tools on the iPhone, but as of this writing the stable SSh is provided by Cydia. when you run Cydia, you can find SSh on the main screen, or you can search for openSSh and install it.
the SSh server works only over a wi-Fi network. it probably would work over 3g, but usually the
network operator blocks incoming services and does not provide mobile phones with a public
iP address. usually the iPhone connects to a wi-Fi network and …