I've recently installed Ubuntu 12.10 on my new Laptop in parallel of Windows 7 on a 32Go SSD, so I don't really have a lot of space to install new softwares.
I've already moved my /home folder to my HDD (500Go) but I would like to know where the .deb are installed and if it is possible to choose the default installation directory to move it directly to the HDD.

Thanks for your answers.