I tried to mirror a forum using httrack. I left it running for days on a Pi and
when the download was interrupted by a power cut I was left with 8.5GB out of
which 7,5GB are .tmp files.

The forum is offline now (which is the reason I was trying to mirror it) and I
can't continue the download. Is there anything I can do with those .tmp files.
They are partially complete .html files and it would be extremely useful if I
could somehow put them in the right directory so that they're usable. As I
said, almost all the downloaded information from the forum is on those .tmp
files even though they might be partial.