AcceptEnv

 只支持SSHv2协议

 指定客户端发送的哪些环境变量将会被传递到会话环境中。具体的细

1.今天需要修改线上数据库权限，查看某账号权限如下：

>show grants for community@localhost;  
+-----------------------------------------------------------------------------------------+
| Grants for community@localhost |
+-----------------------------------------------------------------------------------------+
| GRANT USAGE ON *.* TO 'community'@'localhost' IDENTIFIED BY PASSWORD '565491d704013245' |
| GRANT ALL PRIVILEGES ON `community`.* TO 'community'@'localhost' |
| GRANT ALL PRIVILEGES ON `mysql`.`componet` TO 'community'@'localhost' |
+-----------------------------------------------------------------------------------------+

然后纠结于GRANT USAGE ON是什么意思，在虚拟环境下创建了如上账号:

 >grant all privileges on community.* to community@localhost;

> grant usage on *.* to community@localhost identified by password '123456';

回收权限：revoke .. on .. from ..

> revoke