File verification

MCarlos

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Hi guys,

I have 2 Files filled with numbers on each line: f1.txt and f2.txt

I just want to keep in f1.txt numbers that are not in f2.txt.

If Number1 in f1.txt is not in f2.txt then keep it
else remove it from f1.txt
 


Hello @MCarlos

You can use diff command, something like
Code:
diff f1.txt f2.txt


or some alternatives like colordiff if you want colour result output or wdiff if you want word by word comparison.
another command is cmp

Code:
cmp f1.txt f2.txt

You can find many tutos in web.
 
Thanks for your reply.
The problem is also to remove Numbers from File1 that are present in File2.
It's not only comparing.
 

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