As taken from the the most upvoted answer here.
If the treatment has not been unfair, telling them to take it somewhere else on the network only moves crap around for other sites to deal with. Only if we're dealing with an edge case which is off-topic on the current site, but good and on-topic on an other, should you advise them to take it somewhere else. And if you do, always make sure you know that it's good for the other site, and advise them to read through the help center to establish that for themselves.
And the most upvoted comment.
What's unfair about downvoting someone for not doing any research, which is explicitly mentioned on the downvote arrow? Your premise is flawed. Another flawed premise is that we should cater to everybody and that a SE goal is to be "friendly" - it's not, SE sites are expected to be useful, and possibly non-offensive, but "friendly" is not an objectively measurable thing. I'd say the commenters told OP that the question is crap in a friendly way, what more do you want?
Which seems to fit here perfectly.
The user asked how to save a text file in linux, without stating what editor he used. And then proceeded to loose his temper within minutes of getting a response.
Personally I would have linked him to the first google hit, flagged to close as low quality and never looked back. And while this question has been linked I think the comment on it Rule 2: don't migrate endless trails of duplicates might be a better fit here. As you can see from the first google hit, it's not exactly hard to come by information.
On a personal level though, this looks like a person who's just following a guide to do something that he has no idea how to do, got stuck and frustrated and is now reaching at straws.
While I feel sorry for him, I wouldn't in any way consider him in good standing.
