upgrade - Installing Updates selectively from command line

I have gone through forums and could not find a definitive answer for a requirement that I have. Any help would be much appreciated.

I have a server machine running Ubuntu 11.10 server. When I log in to it I see a message of the form

60 packages can be updated.
23 updates are security updates.

How can I install updates selectively(pick and choose) through command line. For instance I might want to install only the security updates. I know that support for 11.10 has ended. But I cannot upgrade to a higher version at the moment.

As I mentioned earlier, I'm on 11.10 and cannot upgrade to a later version. I'm not sure if I run apt-get dist-upgrade, will it upgrade me from 11.10 to some higher version, or will I stay on 11.10 and only updates for 11.10 will be installed.

Thanks