open FILE,'/Users/j/Desktop/test.log';
while (<FILE>) {
    chomp;			#check for duplicate file
	if ($_ =~ m/appending/) { 
		print "Looks like the data you entered is already on file\n";
		close (FILE);
	}
	else {
		print "hey hey success\n";
		close (FILE);
		&append;
	}
}