### first.file ####
123123
2222
3344555
123abc




#### 2nd.file ###
1111,myline other words
123123,another line of this file
2222,some lines




##i need to get the lines in my 2nd.file that is not in my first.line, in the example above i must get a result of
123123,another line of this file
2222,some lines