N: Ignoring file 'cloudera.list_' in directory '/etc/apt/sources.list.d/' as it has an invalid filename extension
N: Ignoring file 'opera.list_' in directory '/etc/apt/sources.list.d/' as it has an invalid filename extension
...
N: Ignoring file 'tor.list_' in directory '/etc/apt/sources.list.d/' as it has an invalid filename extension
Как правильно "прокомментировать" файлы там?