git installation error missing installation candidate

Question

I tried installing git on Ubuntu 12.10 using the command sudo apt-get install git. But I am getting error message like this:

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Answer 1

I had this problem as well. In Software and Updates, Canonical-supported free and open-source software (main) was unchecked and under the Installable from CD-ROM/DVD section, the box was checked causing apt to look for the package on a non-existent optical drive.