Um, it is morally wrong to slurp log files into perl arrays :)

Just read the records one at a time, and when you encounter the date you are looking for, start writing to the other log file

my $found_date = 0;
while( <LOG> ) {
    $found_date = 1 if /$date/o;
    print LOGFILE if $found_date;
}
[download]

I think that even if you don't find the date, your script as it stands will still write the last line to second file. I can't decide whether that is a bug or a feature... if the latter, then you should print LOGFILE unless $found_date after the end of the while loop.

Note that saying print LOGFILE is the same as saying print LOGFILE $_ (the $_ is implied). In any event, you don't need to quote $_.

--

g r i n d e r
print@_{sort keys %_},$/if%_=split//,'= & *a?b:e\f/h^h!j+n,o@o;r$s-t%t#u';