The array, @ARGV contains the space separated stuff that follows the command.

#!/usr/bin/perl;
use strict;
use warnings;

#this file is: file_3.pl
#command used: >perl file_3.pl -file_1 -file_2

print "$_\n" for @ARGV;

__END__
C:\Projects_Perl\testing>perl file_3.pl  -file_1 -file_2
-file_1
-file_2
[download]

There are modules that can parse out options like "-x" and so forth. Depending upon your shell, wild cards can be used in the command line, like: file_*

I am not sure what you want to do. Please explain further.