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compare two lists on two files

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# 1  
Old 08-27-2012
compare two lists on two files
I have two files A and B listing ip addresses
and all the ip addresses in B are in A, and A includes other ip addresses
now I want to get the list of the ip addresses that are in A but not in B
how to achieve this? thanks
# 2  
Old 08-27-2012
Hi

File1:
Code:
$ cat file1
10.12.13.14
10.12.13.16
10.12.13.11
10.12.13.19

File2:
Code:
$ cat file2
10.12.13.11
10.12.13.19

Output:
Code:
$ comm -23  <((sort file1)) <((sort file2))
10.12.13.14
10.12.13.16

Guru.
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