But being concise isn't necessarily enough -- you should aim for concise and descriptive, like your last sentence: "I just want each host to know whether it is different from any other host". Examples can also help.

Also, keep in mind that many monks are used to seeing short posts asking for help with no example code where the OP clearly did not put a lot of thought into it. See e.g. How to convert a shell script to Perl? (note that originally there were no code tags). If you are too concise then your post may look like one of those, especially when just skimming it over it!! Not what you want, obviosuly!!

In the future, aim for a better balance between being concise and explaining some details. And many monks like to have an idea of what problem you are actually trying to solve (e.g. why you want your servers to detect if they are different).