TYPO3 Core

1.

php7.0 /var/www/example.org/www/typo3/sysext/core/bin/typo3 extbase -v

yields

[Symfony\Component\Console\Exception\LogicException] You must override the execute() method in the concrete command class.

Exception trace:
 () at /var/www/example.org/typo3_src-8.7.3/vendor/symfony/console/Command/Command.php:164
 Symfony\Component\Console\Command\Command->execute() at /var/www/example.org/typo3_src-8.7.3/vendor/symfony/console/Command/Command.php:262
 Symfony\Component\Console\Command\Command->run() at /var/www/example.org/typo3_src-8.7.3/vendor/symfony/console/Application.php:826
 Symfony\Component\Console\Application->doRunCommand() at /var/www/example.org/typo3_src-8.7.3/vendor/symfony/console/Application.php:189
 Symfony\Component\Console\Application->doRun() at /var/www/example.org/typo3_src-8.7.3/vendor/symfony/console/Application.php:120
 Symfony\Component\Console\Application->run() at /var/www/example.org/typo3_src-8.7.3/typo3/sysext/core/Classes/Console/CommandRequestHandler.php:91
 TYPO3\CMS\Core\Console\CommandRequestHandler->handleRequest() at /var/www/example.org/typo3_src-8.7.3/typo3/sysext/core/Classes/Core/Bootstrap.php:310
 TYPO3\CMS\Core\Core\Bootstrap->handleRequest() at /var/www/example.org/typo3_src-8.7.3/typo3/sysext/core/Classes/Console/CommandApplication.php:75
 TYPO3\CMS\Core\Console\CommandApplication->run() at /var/www/example.org/typo3_src-8.7.3/typo3/sysext/core/bin/typo3:22
 {closure}() at /var/www/example.org/typo3_src-8.7.3/typo3/sysext/core/bin/typo3:23

2.

php7.0 /var/www/example.org/www/typo3/sysext/core/bin/typo3 extbase

yields

[Symfony\Component\Console\Exception\LogicException] You must override the execute() method in the concrete command class.

3.

php7.0 /var/www/sevas.lan/www/typo3/sysext/core/bin/typo3 extbase -x

yields

[Symfony\Component\Console\Exception\RuntimeException] The "-x" option does not exist.