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Bumping your own thread after just an hour is not done (although I do see now that you added a second question), it also has another side-effect: It takes you of the zero reply list (all post with no replies are cycled to give them more exposure).
About your first request: Which 2 numbers need to be compared and how are these numbers entered (by hand, in a file)?
About your second request: Have a look at the sort command.
You have a file with 4 numbers (4? your other posts show 5 numbers). Do these numbers need to be compared to each other or to something else? Please tell us in more details what you want/need.
Already answered this one: Look at the sort command (man sort for details and options).
Hope this helps.
Firstly compare these numbers then sort it.These four or five or six numbers limit is not there.