Exclude packages from `apt-get upgrade`

Question

Possible Duplicate:
How to prevent updating of a specific package?
Keep the Ubuntu package version I'm using now

Is it possible to upgrade all packages except a given package? Is there something like apt-get upgrade --exclude package_to_exclude?

Answer 1

To hold a package:

In short: sudo apt-mark hold <package>

or

echo <package> hold | sudo dpkg --set-selections

To unhold a package:

In short: sudo apt-mark unhold <package>

or

echo <package> install | sudo dpkg --set-selections

Answer 2

Check out "Introduction to Holding Packages" in the Ubuntu's Pinning Howto