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Is there any possibility to upgrade the kernel by using command in terminal in ubuntu? If yes, then please reply. Please tell if possible that how command works? thanks

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I don't understand what you are asking here. Do you want to upgrade to the last vanilla kernel or just to the last distribution kernel?. – Javier Rivera Apr 28 '12 at 10:21
I have not more info about this but it may be distribution kernel – Ghost Answer Apr 28 '12 at 10:24
Can you give us some context?. To wich kernel do you want to update to?. Why?. Your kernel should be updated the same way that the rest of the system. – Javier Rivera Apr 28 '12 at 10:28

run the following code:

sudo aptitude update
sudo aptitude safe-upgrade
sudo aptitude full-upgrade
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If you are trying to upgrade the kernal of Ubuntu 11.10 which is in my system linux-image to linux-image 3.2.x.x then I think 3.2.x.x is not available for Ubuntu 11.10.

If you want to do that forcefully then here what you can do:

sudo apt-add-repository ppa:francisbrwn9/kernels
sudo apt-get update
sudo apt-get dist-upgrade

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