The solution presented by 1nickt, making "hot" the FH, is the right one most of the time. There are, however, some operating systems (such as VMS) where this does not really work: you just can't see, or not even know the size, of a file that has not been closed.

In this case, the best solution that I know is to open the target file for append, print and close the log file each time you write something to it. This might seem inefficient, and it is indeed not very efficient, but if it is just a log file not getting too much input, it is OK.

But, admittedly, this is very OS specific, I don't need that under Unix or Linux (and probably not under Windows, as far as I know).

In reply to Re: Print log at runtime instead of dumping all at once later by Laurent_R
in thread Print log at runtime instead of dumping all at once later by Technext

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