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POawk paste comparison printing
 

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    <p>I have two files, each file has an md5 checksum of a file name. Both are in separate folders. When I paste these files, I am looking for a mechanism to do the following:</p> <p>if $column 3 matches $column 6, solely print out those two side by side:</p> <pre><code>filename1 = md5_checksum filename2 = md5_checksum filename3 = md5_checksum filename4 = md5_checksum filename5 = md5_checksum filename6 = md5_checksum </code></pre> <p>Hopeful result:</p> <pre><code>filename1 = md5_checksum filename6 = md5_checksum </code></pre> <p>So imagine (or test) the output of:</p> <pre><code>md5 directoryA/* &gt; checkA ; md5 directoryB/* &gt; checkB paste checkA checkB </code></pre> <p>I'd like to say: "Look in checkA, filename1 is also in checkB albeit a different name" (same checksum)</p> <p>FYI, what I have tried:</p> <pre><code>awk &gt; SIMILAR 'NR==FNR{ _[$4]=$4 next}{print $0, _[$4,$4] }' checkA checkB </code></pre> <p>($4 being the field on both files checkA and checkB)</p> <hr> <p>Here is what I perceive is the best explanation as to what I'm trying to do. Sincerest thanks for answering so quickly:</p> <pre><code># touch A/{fee,fie,foo,fum} # touch B/{Bee,Bie,Boo,Bum} # md5 B/* &gt; checkB # md5 A/* &gt; checkA # more checkA MD5 (A/fee) = 2737b49252e2a4c0fe4c342e92b13285 MD5 (A/fie) = df8b712c4fe20a0df933819665770165 MD5 (A/foo) = 51ca4befb7cb5bd22766a33c73ffca5b MD5 (A/fum) = a80b2c31cfc269e4aa2f48658b5349d9 # more checkB # md5 B/* MD5 (B/Bee) = b026324c6904b2a9cb4b88d6d61c81d1 MD5 (B/Bie) = 2737b49252e2a4c0fe4c342e92b13285 MD5 (B/Boo) = df8b712c4fe20a0df933819665770165 MD5 (B/Bum) = 51ca4befb7cb5bd22766a33c73ffca5b </code></pre> <p>If we see here, file foo in A (A/foo) is similar to B/Bum</p> <p>I'd like the output to be something like:</p> <pre><code>A/foo B/Bum = 51ca4befb7cb5bd22766a33c73ffca5b A/fee B/Bie = 2737b49252e2a4c0fe4c342e92b13285 </code></pre>
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    1. COyour example output implies that your want to scan all lines against all other lines (by postion 3 v 6), is this your intent? Read up about `(f)grep -F -f listFile inFile > outFile` Good luck.
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    2. COshellter thanks, but not really... Some files are named differently, e.g., checkA may have a file named foo with an md5 checksum of say 5, and on checkB the file might be name fee (yet the same md5 checksum)
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    3. COConsider putting actual numbers in your test data instead of `md5_checksum`. Hard to tell your intent. Thanks for the addtional info and your code sample. Good luck.
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