I want to install a .deb file. After going through various questions, I came across these three options: dpkg, GDebi and Ubuntu Software Center. However, I want to install the. Deb file via Synaptic Package Manager only. Is there any method by which I can install. Deb file as well as all it's dependencies via Synaptic Package Manager?
Well actually you can't install .deb files through Synaptic.
You have to install it by command-line:
sudo dpkg -i filename.deb
Command-line is faster and easier as you can know the problem (if there is any) by the debugging information it provides.