MobileTerminal is an extremely handy tool to have if you’re used to using a command line interface. For example, you can use it to change the default root and mobile password and increase the security of your iOS device. Unfortunately, the version of MobileTerminal that Cydia offers at the moment, won’t work on iOS 5. In this tutorial we’re going to show you how to install a working version of MobileTerminal on your iOS device.
1. Download iFile ( via Cydia )
2. From your iOS device open this link ( terminal deb file )
3. Tap on ‘Download’ and than ‘Open in iFile’
4. Tap on ‘Installer’
5. Reboot your iOS device
[thx Joseph, via]