#!usr/bin/perl
use strict;
use warnings;
use Net::SFTP::Foreign;

my %args = ( host     => "127.0.0.1",
	     user     => "user",
	     port     => "22",
	     # psw    => "psw", # uncomment if you are using passwords
	     key_path => "/home/user/.ssh/id_rsa" ); # comment if you are using passwords

my $sftp = Net::SFTP::Foreign->new(%args);
$sftp->die_on_error("Unable to establish SFTP connection");

my $ls = $sftp->ls('/home/user/Monks')
    or die "unable to retrieve directory: ".$sftp->error;

print "$_->{filename}\n" for (@$ls);

__END__

$ perl test.pl
benchmark.pl~
Foo
sample.pl
test.log
out.txt
sample.pl~
..
..
..