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Quick Tip
Find Files Containing a Text Pattern
find . -iname "*.txt" -exec grep -l "hello" {} +
Quick Tip
Create a Bootable USB from an ISO Image
sudo dd if=/path/to/image.iso of=/dev/sdX bs=4096k
Replace /dev/sdX with your USB device, for example, /dev/sdb.
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Disable Overlay Scrollbars in GNOME
gsettings set com.canonical.desktop.interface scrollbar-mode normal
Changes should occur instantly. The overlay scrollbars should now be replaced with normal scrollbars. This method works for Ubuntu 12.10 and above.
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The latest KDE security update, 4.6.4, is now available in the Kubuntu Updates PPA. This release brings several new features, including:

- the new Kontact suite brings next generation groupware to desktop and mobile

- Kontact receives a major architectural boost, using the capabilities of the new scalable Akonadi groupware framework to build interconnected PIM-related applications


- software updates to KDE Workspaces, Applications and Development Platform

To install the latest KDE version in Kubuntu 11.04 Natty Narwhal, open a terminal and type in the following commands:

sudo add-apt-repository ppa:kubuntu-ppa/ppa
sudo apt-get update
sudo apt-get upgrade

If you don’t have Kubuntu installed, install it using:

sudo apt-get install kubuntu-desktop

If you have Ubuntu but want to try KDE with only a core set of applications like KDE Plasma, file manager, web browser, text editor, then install the kde-plasma-desktop package:

sudo apt-get install kde-plasma-desktop

To revert to the default KDE packages from the repositories, install the ppa-purge binary and run it like this:

sudo apt-get install ppa-purge
sudo ppa-purge kubuntu-ppa

The ppa-purge command will comment your sources lines inside the /etc/apt/sources.list.d/kubuntu-ppa-ppa-natty.list file, and then replace the packages which were installed from the PPA with the ones in the default repositories.

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del says:

Hi,

The folowing line:
sudo apt-get update

should be AFTER the
sudo add-apt-repository ppa:kubuntu-ppa/backports

It should looks like —>

sudo add-apt-repository ppa:kubuntu-ppa/backports
sudo apt-get update
sudo apt-get upgrade

Craciun Dan says:

You’re right, that’s a mistake, thanks for spotting it. I will change it right away.

del says:

Then it probably would be better if the
“sudo add-apt-repository ppa:kubuntu-ppa/backports”
line would be
sudo apt-add-repository ppa:kubuntu-ppa/ppa
Which you can see if you’ll follow “Kubuntu Updates PPA” link in the beggining of this article. :)
So:
sudo apt-add-repository ppa:kubuntu-ppa/ppa
sudo apt-get update; sudo apt-get upgrade

Craciun Dan says:

You’re right again :) Thanks.

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