update: it looks like you are trying to move the $out file to the $old file, but you're not deleting the $old file first. Then you are trying to unlink() the $out file, but if the mv() succeeded, it would fail anyway.

Try this: 

my $dir = "H:/vpn/";
my $out = "H:/vpn/vpnwarn.out";
my $old = "H:/vpn/vpnwarn.old";

if (-e $old) {
   unlink($old) || die ("Could not unlink: $!");
}
if (-e $out) {
  mv ($out, $old) || die ("Could not mv: $!");
}
# create and write new $out here

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In reply to Re: Simple Log Rotate Problem by meetraz
in thread Simple Log Rotate Problem by monger

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