p7zip (7z) and rar in ubuntu

If you simply install p7zip-full, it fails to unrar rar archive saying “Unsupported Method” and “Sub items Errors: 1”.

To get rid of it, install the p7zip-rar which adds the codec Rar29.so required for the same. Its available in the repos. I don’t know why they have not included it in the full version, probably its non-free.