I came across the following question: Merging 2 files based on single column. Even though two answers have been posted already I answered a very similar question already on another stackexchange site: Join (large) files on alphanumeric pattern.
I believe these questions to be duplicates but I can't flag the one here as a duplicate because the questions were posted on different stackexchange sites.
There is often overlap between this site and the more general unix stackexchange site.
In fact the question here is probably more suited on unix.stackexchange.com since it is in no way ubuntu specifc.
Does it make sense to move this question to unix.stackexhange and then mark it as duplicate? Wouldn't it be more convenient and generally useful to be able to mark questions as duplicate across stackexhange sites?