use Archive::Rar::Passthrough;
 my $rar = Archive::Rar::Passthrough->new();
 
 if (not $rar) {
   print "Could not find your 'rar' command'.\n";
 }
 
 my $errorcode = $rar->run(
   command => 'a',
   switches => ['-m0'], 
   archive => 'my.rar',
   filelist_files => [ 'test.txt' ],

 );
 
 if ($errorcode) {
   print "There was an error running 'rar': " . $rar->explain_error($retval) . "\n";
   my $output = $rar->get_stdout();
   my $errors = $rar->get_stderr();
   print "The 'rar' command said (if anything):\n" . $output
         . "\nAnd spammed on STDERR:\n" . $errors . "\n";
 }

command => 'a','cw [comment]' ,