使用composer安装drush时出错

lfeven

执行：composer global require drush/drush:8.*提示：安装成功

编辑 ~/.bash_profile 文件
加入：

1. export PATH="/root/.composer/vendor/bin:$PATH"

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然后输入：drush  报错代码如下：

1. [root@iZuf6d141678w8jd0p549wZ ~]# drush version
   
2. /root/.composer/vendor/bin/drush: line 17: /root/.composer/vendor/drush/drush/drush: Permission denied

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licess

chmod +x /root/.composer/vendor/drush/drush/drush