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Hi all, I'm trying to match the following two files with the code below:


awk -F, 'NR==FNR {a[$1,$2]=$0; next} ($12,$4) in a {print $12,$1,a[$1,$2]}' OFS="," file4.csv file3.csv


but the code...

Thanks this works with the following examples files. However, it's been 4 hours since I've started running on the actual files I have, and it still has not finished. The actual file3 I have is about...

Thank you Akshay. That worked.

I have another similar matching problem. I want to compare the previous outputted result file (I will call it file3) with file4 (below) by...

Hi all, I'm pretty much a newbie to UNIX. I would appreciate any help with UNIX coding on comparing two large csv files (greater than 10 GB in size), and output a file with matching columns.

I...