I just tried your solution with an input file of 100,000 lines but I only got 65537 lines of output. Here is the command line I used to run the test:

perl ibuf.pl -B=1024 < testdata.csv | perl obuf.pl -B=1024 > out.csv

In reply to Re^2: selecting columns from a tab-separated-values file by Lotus1
in thread selecting columns from a tab-separated-values file by ibm1620

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