use File::ReadBackwards;
use POSIX;

my $success;
my $items;
my $earliest = strftime( "%Y-%m-%d %H:%M:%S", localtime( time()- 1 * 60 ) );

$bw = File::ReadBackwards->new( '/Documents/Traning/Perl/output.txt' ) or
                        die "/Documents/Traning/Perl/output.txt $!" ;

while ( defined( my $log_line = $bw->readline() ) ) {


    last if $log_line lt $earliest;

    if ($log_line =~ /EnableDelayedExpansion/i) {
        print $log_line;
    }else
	{ print "error";}

}