Thank you. This works well, but I dont understand all your code. For example, why do we need to say

if ($columns[1] and $columns[1] =~ /^HLA-A/)

e.g. with the same reference used twice? Also, I would like to send the output to a variable and not print to a file. I know this should seem like a minor change to your great code, but I can't seem to make it work. Could you help please? (My novice level skills are showing)

In reply to Re^2: Removing partially duplicated lines from a file by Sandy_Bio_Perl
in thread Removing partially duplicated lines from a file by Sandy_Bio_Perl

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