按官方的安装说明 Install a site-local Drush 1.It is recommended that Drupal 8 sites be built using Composer, with Drush listed as a dependency. That project already includes Drush in its composer.json. If your Composer project doesn't yet depend on Drush, run composer require drush/drush to add it. 2.To run Drush, navigate to your Drupal root and call ../vendor/bin/drush. 并且chmod u+x /usr/local/vendor/bin/drush 在安装路径下/usr/local/vendor/bin/drush 运行drush: ./drush 出现以下错误： PHP Warning: exec() has been disabled for security reasons in /usr/local/vendor/drush/drush/includes/startup.inc on line 32 PHP Warning: Invalid argument supplied for foreach() in /usr/local/vendor/drush/drush/includes/startup.inc on line 33 /usr/local/vendor/bin/drush.launcher: line 17: /usr/local/vendor/drush/drush/drush.launcher: Permission denied 查看文件：1。PHP Warning: exec() has been disabled for security reasons in /usr/local/vendor/drush/drush/includes/startup.inc on line 32内容为： exec('printenv', $env_items); 2.PHP Warning: Invalid argument supplied for foreach() in /usr/local/vendor/drush/drush/includes/startup.inc on line 33内容为：foreach ($env_items as $item) { 3./usr/local/vendor/bin/drush.launcher: line 17: 内容为："${dir}/drush.launcher" "$@"