As it says in the title. I want to get rid of this useless application ubuntu one. I've removed the application files from the software centre, but the icon is still shown.
4 Answers
Open a terminal CTRL+ALT+T and type:
killall ubuntuone-login ubuntuone-preferences ubuntuone-syncdaemon
sudo rm -rf ~/.local/share/ubuntuone
rm -rf ~/.cache/ubuntuone
rm -rf ~/.config/ubuntuone
mv ~/Ubuntu\ One/ ~/UbuntuOne_old/``
(source: Ubuntu One) - Support pages no longer exist.
And then just to make sure.
sudo apt-get remove --purge ubuntuone-*
(Note for Ubuntu 14.*: Please refer to iheggie's answer to avoid the removal of the Ubuntu Desktop.)
Edit: The reason for this method over more simple methods is to ensure that the configurations, cache and any other preferences do not remain on your system; if we've learnt anything from Windows it's that prefetch is more than enough to slow a system down, it's good practise to clear your system now then to forget what needs to be cleaned later.

- 865
- 5
- 16
Of course, you can remove Ubuntu One (U1) either via the Software Centre (as mentioned in other answer) or through the terminal using:
sudo apt-get purge ubuntuone-*
This will remove the U1 application along with the various U1 plugins for things like rhythmbox, etc.

- 7,142
Under ubuntu trusty 14.04, I used @cossacksman's answer, except I removed the packages one by one using synaptic. I had to leave ubuntuone-client-data
installed as both apt and synaptic wanted to remove ubuntu-desktop
as well.

- 159
- 4
-
1Indeed, how to remove all ubuntuone packages without removing ubuntu-desktop ? What happens if we remove ubuntu-desktop ? – miguel.negrao Jun 04 '14 at 16:09
-
Good work, also, here is a link to the ubuntu-desktop package, it will list the many things which depend upon it being installed and consequently will cease to work if it is removed. – cossacksman Jul 22 '14 at 11:47
Ok got my solution, remove Ubuntu One with Software Centrer, then remove Ubuntu One Music Store. Now reboot and no more annoying cloud icon.
sudo apt-get remove --purge ubuntuone-control-panel* deja-dup-backend-ubuntuone libubuntuoneui-3.0-1 python-ubuntuone-* rhythmbox-ubuntuone
– Julien Carsique Oct 20 '14 at 12:49