#!/usr/bin/perl -w use strict; use diagnostics; use Text::CSV; my $qfn_in = 'data.csv'; open( my $fh_in, '<', $qfn_in ) or die("Can't open file \"$qfn_in\": $!\n"); my $fh_out = \*STDOUT; my $csv_in = Text::CSV_XS->new( { sep_char => ',', binary => 1, eol => '\015' } ); my $csv_out = Text::CSV_XS->new( { sep_char => "\t", eol => $/ } ); while ( my $row = $csv_in->getline($fh_in) ) { $csv_out->print( $fh_out, [ @$row[ 2, 3, 0, 4 ], ] ); }