CODEWITHSUNDEEP
bashshellawkscripting
David
David

Reputation: 23

How to find checksum matches between two lists (but not within the two lists)?

I want to find duplicates between two folders based on lists with checksums.

A solution with some shell script (some bash, awk or similar) would be best.

Assume that for the two folders I have already generated two lists

[FolderA.txt]
file1 abc1
file2 abc1
file3 def5

and

[FolderB.txt]
file4 abc1
file5 mno2
file6 def5

Now I want to find out, that

However, I only want matches between folders, not within one folder. Hence, I do NOT want a match between file1 and file2.

Upvotes: 2

Views: 104

Answers (1)

Cyrus
Cyrus

Reputation: 88889

You can use this:

join -j2 <(sort -k2 FolderA.txt) <(sort -k2 FolderB.txt)

Output:

abc1 file1 file4
abc1 file2 file4
def5 file3 file6

If you want only column 2 and 3, add | cut -d " " -f 2-

Upvotes: 2

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