vmtim

vmtim
    or
    vmtim -o outputfilename

    adds time/date before vmstat procs line
        -o filename - file on disk rather than print to screen
        -c      - add CR before every NL
    To use :
        vmstat 5 | vmtim | tee savefilename
        or
        vmstat 5 | vmtim -o savefilename

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