How to find all dependencies not installed

Question

I have .deb file which is not updated for Ubuntu 13.10, it needs a lot of dependencies to be installed. How can I get a list of all its dependencies not installed in my Ubuntu 13.10?

Answer 1

Try either apt-cache showpkg <package-name> or dpkg -I <package.deb>

Answer 2

The most easiest approach is using gdebi:

sudo apt-get install gdebi-core
sudo gdebi package.deb

It would install all dependencies you need.