any command for receiving latest tweets of someone?

for example to get tweets of username “nima” or “user”.

No, you can just “update” your timeline. But that is a nice idea…

I don’t know what you mean exactly of “timeline”. for example there are so many tweets there and I just want to see latest 20 (or 10) tweets by ONE of my friends without loading his/her page.
that would be great if you include that :)

Understood. We are evaluating the amount of work needed for your wished feature. It’s a nice one, I also have that need.