diff 2 files; output diff's to 3rd file

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# 1  
Old 05-23-2002
Question diff 2 files; output diff's to 3rd file

I want to compare two files. All records in file 2 that are not in file 1 should be output to file 3.

For example:

file 1

file 2

file 3 should have

I have looked at diff, bdiff, cmp, comm, diff3 without any luck!

Thanks for your help
This User Gave Thanks to blt123 For This Post:
# 2  
Old 05-23-2002
comm -23 file2 file1 > file3 should get you what you are looking for.
# 3  
Old 05-28-2002
Bug diff 2 files; output diff's to 3rd file

Thanks for the info, it works!

When I read "man" about comm, it had mentioned the output as being "text columns". This confused me, because I wanted the different records.

Thanks again,
This User Gave Thanks to blt123 For This Post:
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