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I would be grateful to you for some details about the top command output achieved using the hotkey "A". I suppose the it gives back the swap usage per PID: it is right, isn't it? Could you please explain me what does mean SWAP = 11m ? Moreover, it is possible to redirect this output, displayed in such way, to a file? My need should be to collect those data through some hours then analyse them...

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Everything you need is to execute the command man top. All questions are answered there. Even the -b switch for collecting data over time.

But you probably should use a monitoring software instead of the plain top.

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