Very similar to a problem posted a few days ago.

perl -ne 'print if $. <= 50' test.txt > first_50.txt 
perl -ne 'print if $. > 50 && $. <= 100' test.txt > 51_to_100.txt
perl -ne 'print if $. > 100 && $. <= 150' test.txt > 101_to_150.txt 
perl -ne 'print if $. > 150 && $. <= 200' test.txt > mylittlepony.txt

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In reply to Re: Group every 50 rows by pvaldes
in thread Group every 50 rows by perlnoobster

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