Where can I find my Cydia tweaks via SSH?

I have a jailbroken iPod Touch 4 and I want to view my downloaded tweaks I've gotten from Cydia using SSH, (I use iFile just so you know). Is it possible to access them this way or no? If yes, what location are they in and how do I get to there? I know where the themes are but not tweaks. Please help and thanks.