how to open qt linguist?

[tomkonikkara]

I am using Ubuntu 10.04 and installed Qt SDK from http://qt.nokia.com/downloads/ .
But my problem is that I don't know where is qt linguist. lupdate, lrelease commands are not working in my command prompt. Please suggest a way to solve this. Thanks in advance.

[tomkonikkara]

I found linguist and all other components in qt/bin. Now problem simplified to how to set qt environment in terminal. Since i am a beginner I dont know how to set that. I googled, but didnt found a satisfactory result. Can anyone suggest how to set Qt environment permenantly?
linguist is positioned in qtsdk2010-05/qt/bin/