The proper way to do it is to read the first file, and use a hash to store the contents. Use the vm_name column as key and the whole row as a value.

Then read the second file line by line, and look up the vmname in the hash you created earlier, and print the joined columns to the third file.

Perl 6 - the future is here, just unevenly distributed

In reply to Re: Compare 2 CSV files and create a new CSV file out of comparision by moritz
in thread Compare 2 CSV files and create a new CSV file out of comparision by slayedbylucifer

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