if (&Search_Buff()){
     &Site_Up;
     }
else {
   &Site_Down;
     }

# Sub to search gethttpbuff.txt for a string & return 0 or 1          
sub Search_Buff
{

   # Open hethttpbuff.txt file, create an array with the data & close file. End if file is locked.
   open (gethttpbuff, "gethttpbuff.txt") || die("Could not open file!");
   @array = <gethttpbuff>;
   close(gethttpbuff)

   # If search string is found make var equal to "1". If the search string is not found make var equal to "0"
   foreach $line (@array) {
      if ($line =~ /$search/) {
         return 1;
      } 
   }
   return undef; # or return 0;
}