How to use the command line (cli) think call in ThinkPHP

In some scenarios, we need to call the code in the command line

1. First, in application\command Create a new hello.php in the directory (create it if it does not exist):

   <?php
   namespace app\command;
   use think\console\Command;
   use think\console\Input;
   use think\console\input\Argument;
   use think\console\input\Option;
   use think\console\Output;
   use think\Request;
   class hello extends Command {
    /**
     * 重写configure
     * {@inheritdoc}
     */
    protected function configure()
    {
        $this
            // 命令的名字（"think" 后面的部分）
            ->setName(&#39;hello&#39;)
            // 配置一个参数 使用$input->getArgument(&#39;username&#39;)获取
            // ->addArgument(&#39;username&#39;)
            // 运行 "php think list" 时的简短描述
            ->setDescription(&#39;定时任务微服务.&#39;)
            // 运行命令时使用 "--help" 选项时的完整命令描述
            ->setHelp("定时任务微服务 无参数");
    }
    /**
     *  * 重写execute
     *  * {@inheritdoc}
     *  
     * @param Input $input
     * @param Output $output
     */
    protected function execute(Input $input, Output $output)
    {
        echo &#39;hello world&#39;;
    }}

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2. Modify application/command.php (create it if it does not exist)

   <?php
   return [
    "app\command\hello",];

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3. cd to the project root directory and enter

   php think hello

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   # on the command line.
##OK, successfully called

hello world

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