merlyn's answer is only good for small file (i.e. ones that fit in the memory you have available for this proccess).

If the file can be big, then you should favor multiple passes as you requested originally. To do this, use: 

    seek(FILEHANDLE, SEEK_SET, 0)

[download]
between the passes to go back to the beginning.

In reply to Re: Using in multiple passes by fundflow
in thread Using in multiple passes by Anonymous Monk

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