ePN Argument list bug

[Jason Abraham]

It seems that Nagios's ePN is unable to handle empty arguments or extra
spaces in commands.
Non-ePN plugins (C,shell,nagios: -epn) are able to handle commands with
optional arguments.
By optional arguments I am referring to commands which have an addition arg
parameter which
is not always used by the service calling the command.  A perl plugin being
processed by
ePN, unfortunately, errors out if not all of the arguments are populated
(see the example
below)


CONFIG
-------
define command {
  command_name  check_ifstatus_test
  command_line  $USER1$/check_ifstatus -H $HOSTADDRESS$ -C $ARG1$ $ARG2$
}


define service {
  host_name                       coreswitch
  service_description             IfStatus
  use                             generic-service
  check_command                   check_ifstatus_test!aa5bbCC
  register                        1
}

RESULTS
--------
**ePN /opt/nagios/libexec/check_ifstatus: "Use of uninitialized value $opt
in string eq at /usr/share/perl/5.10/Getopt/Long.pm line 497,".




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