discourse I’m a member of has broken inter-thread links after porting (twice) from other forum soft. Is there any automated way to find broken links?
Different importers deal with internal links in different ways. It may be that you didn’t configure it correctly, it doesn’t support fixing internal links, or that something about your links is unexpected.
If they are links within the forum and the broken links reference post ids that are in custom list links then you should be able to do a replacement in rails.
Failing that, you can just do a search for the old pattern.
What forum software was it? Is the site already live or can you run another import?
What do the bad links look like?
That said, I’m not aware of an easy way to find bad links.