Question: I want to install flightgear
I understand I can install it by doing sudo apt-get install flightgear, etc.

However, computer uses a SSD and a HDD, with my SSD being very limited.
With flightgear being such a large game, it takes up several gig's of my SSD, which is not going to work.

My home folder is on my HDD, so I want to install it directly to /home/$USER/flightgear/

How can I do this?

I would appreciate other ways too (eg. aptitude, synaptic, dpkg)

Edit: If you do (for example)
`sudo apt-get download chocolate-doom` and then open the .deb with Archive manager, you can extract the files and then use them. This works... but seems like a big hack for something that should be simple to do...

Answer: 
I think I understand what you mean. I've got Ubuntu 12.10 and by instaling **AirDroid**, you can access and control your mobile phone from your desktop.

There are two modes:

* One using a central site where you conect and.. bla bla, we guys don't care... but works ok!!
* The other one is by using mobile phone IP granted by your Wi Fi network, open web broswser on PC and type **http://*phoneIPaddress*:8888** This way your browser will handle the phone... voila

Installing

1. To install AirDroid go to GooglePlay, install it to your android
device,
2. Run it from your device and copy the **IP** showed on your
screen
3. On your desktop web browser, type:

http://**IP**:8888  

This will open the android screen, that is all.

I recomend using bluetooth headseat for phone calls, this way the PC initiate the call the rest is between the phone and the bluetooth headset. Got one from amazon for less than U$5 and headset cost me around U$30, the more expensive headset were really disappointing.

Hope this helps.
Yes. The smartphone just provides an IP connection to and from the web (and some carriers, like Virgin Mobile USA, block VOIP traffic- be warned).

1. If you have a Google account you can add [Google Voice](https://support.google.com/voice/?hl=en#topic=1707989) for free, dial
in the Chrome or Chromium browsers with Google Voice (free in the US
et Canada) and then use the microphone and speaker of your machine.
There was an extension for Firefox years ago, but no longer. [Here's a review](http://www.techrepublic.com/blog/google-in-the-enterprise/see-whats-new-with-google-voice/) and a [critique](http://lifehacker.com/how-to-build-your-own-more-powerful-version-of-google-575896480). Been using it since 2007 and it works reliably, with no commercials, even though free.
2. You can also add a [SIP](http://en.wikipedia.org/wiki/Session_Initiation_Protocol) client like [Linphone](http://www.linphone.org/) or [SFLphone](http://sflphone.org/) among [others](http://en.wikipedia.org/wiki/List_of_SIP_software#Free_and_open_source_license_2) and use VOIP providers such as [CallCentric](http://www.callcentric.com/). You get what you pay for with VOIP providers, but I've been happy with CallCentric. Here are [two](http://www.dslreports.com/comments/3050), count them two, [reviews](http://www.voipreview.org/reviews/callcentric).