I am using a 160GB HDD installed Windows 7, and I want to use Ubuntu Linux temporary in my System, Can I install softwares in the Live USB permanent while using it. Like Tor Browser I want it every time when I use my USB stick again and again.
Any Help is appreciated.
Yes you can. You need to give the live USB a persistent file storage area (called Casper)
Here is a guide https://help.ubuntu.com/community/LiveCD/Persistence
Another alternative is to actually install Ubuntu to your USB disk and run it off that (USB 3.0 or higher is best, and you need a BIOS that will boot it reliably. I've had mixed success with different boxes on this one).
