Re^2: how to reset the input operater in while loop?

Assuming the file is seekable (if it's not, you cannot do what you want) …

Why wouldn't GrandFather's approach of close-ing and re-opening work even if the filehandle is non-seekable?

UPDATE: Thanks to JavaFan for a very polite answer to a very silly question.

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Re^3: how to reset the input operater in while loop? by JavaFan (Canon) on Sep 30, 2008 at 21:24 UTC
Because non-seekable usually means the data can only be read only once. Examples of non-seekable handles are (named) pipes, STDIN (usually) and network sockets.	[reply]