Access parameter from the Command Class

Question

Simple way, let command extend ContainerAwareCommand

$this->getContainer()->getParameter('parameter_name');

or

You should create seperate service class

$service = $this->getContainer()->get('less_css_compiler');

//services.yml

services:
  less_css_compiler:
    class: MyVendor\MyBundle\Service\LessCompiler
    arguments: [%less_compiler%]

In service class, create constructor like above you mentioned

public function __construct($less_compiler) {
    $this->less_compiler = $less_compiler;
}

Call the service from command class.

Thats it.

Reason: You are making command class itself as service, bit command class contructor expects the command name as the first argument.