Can anybody help me with the SSH command in the sense that how can i access it on a cross platform. Let me be little clear... Lets say i have a text box on non linux platform asking for the username and password of the m/c it needs to connect to, which is linux m/c. Is it possible to do the authentication in that case. Any other way to do it??
That's one of the great things about SSH--it's platform agnostic.
Copy your id_*.pub file from each platform to the other (ftp, email, USB key, etc.) and append it to the respective ~/.ssh/authorized_keys and you're good to go.