Just open the file and read from it line by line by the diamond operator. Run your code on each filename. I'm not sure whether you can reuse the objects for the actual work you need to do, but if you can't, just create the objects inside the loop instead of outside. 
#!/usr/bin/perl
use warnings;
use strict;

use Text::CSV_XS;
use XML::Twig;

my $twig = 'XML::Twig'->new(...);
my $csv  = 'Text::CSV_XS'->new(...);

my $listfile = shift;
open my $list, '<', $listfile or die $!;
while (my $xmlfile = <$list>) {
    chomp $xmlfile;
    $twig->parsefile($xmlfile);
    ...
}

[download]
($q=q:Sq=~/;[c](.)(.)/;chr(-||-|5+lengthSq)`"S|oS2"`map{chr |+ord
}map{substrSq`S_+|`|}3E|-|`7**2-3:)=~y+S|`+$1,++print+eval$q,q,a,

[download]

In reply to Re: How to read a file containing filenames and pass as input to perl script? by choroba
in thread How to read a file containing filenames and pass as input to perl script? by Kal87

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