Symfony Console Output - symfony

Question

I am writing my first symfony console apps and I would like to ask a question regarding the console outputs.
When I run a new CLI app in the console like: ./testapp then I get the following output:
Usage:
command [options] [arguments]
Options:
--help (-h) Display this help message
--quiet (-q) Do not output any message
--verbose (-v|vv|vvv) Increase the verbosity of messages: 1 for normal output, 2 for more verbose output and 3 for debug
--version (-V) Display this application version
--ansi Force ANSI output
--no-ansi Disable ANSI output
--no-interaction (-n) Do not ask any interactive question
Available commands:
help Displays help for a command
list Lists commands
Is there a way to remove the display of this content? I want only the "Available Commands" to be visible. And is it possible to create my own groups in this display?

Answer 1

As of Symfony 2.5, you can change the default command (the command that's executed when no command name was specified). See for more information: http://symfony.com/doc/current/components/console/changing_default_command.html
The Console component will always run the ListCommand when no command name is passed. In order to change the default command you just need to pass the command name to the setDefaultCommand method.

Answer 2

(Symfony Console 4.1)
It's possible to remove the default options:
$options = $app->getDefinition()->getOptions();
unset($options['ansi']);
unset($options['no-interaction']);
unset($options['verbose']);
unset($options['help']);
unset($options['quiet']);
unset($options['version']);
unset($options['no-ansi']);
$app->getDefinition()->setOptions($options);
or just:
$app->getDefinition()->setOptions();
Options group will not show in the list command.
Although I don't know if this has any undesirable side effect.