ok,

my $filename = '/Users/Pabli/Desktop/do_human_mapping.gmt';
my $match = 'DOID:2055';

open(my $file, '<', $filename) or die "open: $!";

while (<$file>){
   my ($name,$id,@genes) = split /\t/;
   print join("\n",@genes) if $id eq $match;
}

[download]

The answer to your question then, is to use the assignment idiom above, to name the first two fields, and then use an array to slurp up all the genes that follow on the line. Because the name and id never get lumped into the @genes array, you don't have to go through contortions when it comes time to print.

In reply to Re^3: Print entire line by Loops
in thread Print entire line by pabla23

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