rar package not available ..?

I recently installed Ubuntu 10.04 on a machine I was trying to install 'rar' from the terminal, but I get an error that the package isn't 'available' .. !?

This is what I'm typing in:

apt-get install rar sudo apt-get install unrar

And the error I'm getting is:

Package rar is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package rar has no installation candidate

I also updated the repositories using apt-get update, but still problem is not resolved ..

Where can I download this package from manually, so that I can then 开发者_运维知识库manually install it myself .. ?

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try to install using that command ubuntu:~# apt-get install unrar-free

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this question should be in : https://askubuntu.com/
second install un-rar package!

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Well I figured it out myself ...

I searched for 'rar' in Ubuntu Software Center (available in Ubuntu 10.04 at least, which I have), and it found the package I was looking for ..

But why didn't it install from the terminal still remains a mystery ..