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Would it be possible to install Ubuntu 12.04 LTS to a flash drive, install all the updates and desired apps such as flash and THEN install it updates and all to another system? I'm hoping I can save a lot of time and repetition by doing it all once on the flash and then maybe applying a few tweaks after I install it on an actual machine.

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Using remastersys :

You can create live iso of your existing system. So install all the required packages on your Ubuntu and then take a iso using remastersys. Then using startup disk, you can create bootable usb from this iso.

Edit your /etc/apt/sources.list file and add the following line in the end of the file:

deb precise main

Then run the following command:

sudo apt-get update
sudo apt-get install remastersys
sudo apt-get install remastersys-gui
sudo apt-get install remastersys-gtk

To run the remastersys in GUI mode, type the following command:

sudo remastersys-gui
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Thanks Vivek. I don't know my way around linux enough though to understand all the instructions. I don't know what "synaptic" is, "apt line", "oneiric", or the difference between precise and quantal main. They mention a couple of methods that have a general user interface. Which of those would be best for the novice user? – user130855 Feb 14 '13 at 4:13
edit your /etc/apt/sources.list file. Add the following line in the end of the file. – Vivek Feb 14 '13 at 6:12
Please refer the answer – Vivek Feb 14 '13 at 6:15
I've ordered a bigger flash drive. My 4gb wasn't big enough to install the updates and apps on. Thanks for your help! – user130855 Feb 14 '13 at 20:09

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