There is, though. I don't understand... personally I've been using a combo of iSSH into my own iphone. ~/ is located at /private/var/mobile and there's no latency (you ARE connecting to localhost). Git and vim installed means that basically, you can be self sufficient from your iPad/iPhone, without even needing an additional workstation to SSH into. Hell, even Python and Ruby can be installed on the jailbroken iphone. It's basically a portable POSIX-compatible system, after you install all the necessary packages (network-cmds for ping, for example) you're all set.
