C:\abc\dfg
C:\abc\dfg\#@$#@$@

     $key="C:\abc\dfg";
      if( $line =~ /$key\\\S+\\/){ # if this is not end node 
           ($pat)=$line=~/$key\\(\S+)\\/;
      }else{                        # if end node 
           ($last_node)=$line=~/$key\\(.*)/;
      }