Help with diff command usage

[moepower]

I have two large text files that I need to do a comparison off. I know that the "diff" command can be used to display the differences but don't know if it will be able to handle this.

File 1 - approx. 1 million records
File 2 - approx. 800 thousand records

1. I need records in File 1 but not in File 2 stored to another file.

2. I need records in File 1 but not in file 2 or in File 2 but not in File 1 stored to a file.

Thank you

 

[KenCunningham]

You might run up against problems with the size of the files, but take a look at the man page for comm and use it with redirection. HTH.