Ik probeer HellaNZB te installeren. Als ik het eerste doe;
sudo apt-get install python-dev python-twisted unrar par2
Dan krijg ik de melding;
Package unrar is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package unrar has no installation candidate
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En zit ik even vast.