A number of options are available for any vSphere SDK for Perl script. Most of these options allow you to specify the host or hosts to connect to.
Most options require an option value.
perl <app_name>.pl --<option_name> <option_value>
For example, to power on a virtual machine by using the vmcontrol.pl utility application, you must specify the name of the virtual machine to power on, as follows.
perl vmcontrol.pl --server <myserver> --username <admin> --password <mypassword> --operation poweron --vmname <virtual_machine_name>
Run any application or sample without any options or with --help to see its parameters and execution examples. Information about common and script-specific options is included.
Important: If the host you are targeting is in lockdown mode, you cannot run Perl scripts against the host.