That code worked for me and generated output has follows: 
cpu  757611 0 128970 6183389
cpu  757611 0 128970 6183507
cpu  757611 0 128970 6183608
cpu  757612 0 128970 6183708
cpu  757612 0 128970 6183809

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In reply to Re^2: Reopen file when contents changed? by dReKurCe
in thread Reopen file when contents changed? by bofh_of_oz

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