You could replace all your code with: 

$|++;
sleep 5 if -s $logfile;

[download]

This code gets your program to sleep for 5 seconds unless $logfile has a non zero size (-s filetest). You don't need to open a file and check its contents is not blank. If this is the case it will have a size greater than zero. For the filetest operators see perlman:perlfunc:alphabetical and look for -X. The $|++ will flush the buffers. The code if (@file != "") is the same as if (@file) BTW

cheers

tachyon

s&&rsenoyhcatreve&&&s&n.+t&"$'$`$\"$\&"&ee&&y&srve&&d&&print

In reply to Re: Do-nothing loops by tachyon
in thread Do-nothing loops by Wassercrats

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