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i've tried to add a repository with:

sudo apt-add-repository ppa:gottcode/gcppaCannot access PPA

but the system echoed:

Cannot access PPA ( to get PPA information, please check your internet connection.

even though my internet connection is working fine.

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What is it that you're trying to install? – Mitch May 20 '13 at 6:19
What version is your Ubuntu? Does the ppa has package for your Ubuntu version? – llt May 20 '13 at 7:32
@Mitch, i'm trying to install a software called Kapow, as mentioned here -… – Asaf Chertkoff May 20 '13 at 8:45
@llt, my version is 12.04. how can i tell if there is a version for me or not? from the link above i'm guessing that there is. – Asaf Chertkoff May 20 '13 at 8:45
up vote 1 down vote accepted

To install Kapow, you need to download the 32bit version, or the 64bit version.

Once downloaded ( probably the Downloads folder), just press Ctrl+Alt+T on your keyboard to open Terminal. When it opens, navigate to the download location, and run the command(s) below:

sudo dpkg -i <package_name> 

Once the installation is done, search for Kapow in Dash, and click on it.

enter image description here

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