[sudo-users] why are my ~/.bashrc aliases not honoured by sudo ?

[Shriramana Sharma]

Thanks for all your replies. However, I don't completely grok this login 
shell / interactive shell business. And my searches on the net for a 
clear explanation of the difference turned out nothing useful. So though 
it would be slightly OT, could anyone please explain briefly the 
difference between the two?

Shriramana Sharma.