if($build_config_instance){ my $host = 'root@' . $instance->dns_name(); my $scp = "scp -i $pvt_key $base_path/$build_script $host:/root/"; print STDERR "\nssh -i $pvt_key $host chmod +x /root/$build_script \n"; print STDERR "ssh -i $pvt_key $host /root/$build_script \n"; `$scp`; `ssh -i $pvt_key $host chmod +x /root/$build_script `; `ssh -i $pvt_key $host /root/$build_script `; }