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print $col,"\n"; ## string of all the columns I am interested in
...
...
                     # $line is a string and not numeric..
                     # It works if you do
                     # @line[1,2,5,6,70,71,75,100,112,114]

#!/usr/bin/env perl -l

...
my @wanted_elements = @line[@indices];

print "Wanted elements: @wanted_elements";

All line elements: A B C D
Indices I want: 2,3
Wanted elements: C D