This question, Compare two files and write it to "match" and "nomatch" files, has appeared this morning as modified by Community.
As I understand it, Community bumps old questions occasionally on some algorithm.
However, this particular question was also bumped a month ago. At the time I added a substantial answer, because the question has had so many views. OP no longer exists. The question is from 2009. It already had four answers.
The previous answers were not very good, but then the OP was not asked for clarification of what was required at the time.
The question has had a further 500 views in the last month.
This seems a waste (another question could have been bumped instead).
On the one hand, nearly 13,000 have viewed the question.
On the other, none of those near 13,000 have thought to upvote an answer, even those 500 from the last month.
A lot of people are looking at it, so that might argue against Close. But we can't demonstrate that anyone is getting anything from the answers.
Should it be closed? It is not a complete question that can be answered specifically for the specific OP (we don't each know which SORT product they are using), but it is a common general question - which also has many answers elsewhere easily found by searching the web.
Perhaps I should have tried to flag it for Close last month? Hindsight is so useful later on...