Here is another good free app for the Samsung Omnia (or any windows mobile phone for that matter).
Samsung Omnia i910 Apps – Pocket Putty
This one is called Pocket Putty. It is an ssh terminal to connect to ssh servers.
You can download it from http://www.pocketputty.net/.
I have used this to run commands on my linux server while connected to my wireless network. Granted the screen is rather small but it gets the job done.
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