新环境：http://www.cndba.cn/dave/article/2656http://www.cndba.cn/dave/article/2656http://www.cndba.cn/dave/article/2656

[root@MariaDB mysql]# which mysql
/usr/local/mysql/bin/mysql
[root@MariaDB mysql]#
[root@MariaDB mysql]# mysql -uroot -p
Enter password: 
Welcome to the MariaDB monitor.  Commands end with ; or /g.
Your MariaDB connection id is 16
Server version: 10.2.12-MariaDB-log MariaDB Server

Copyright (c) 2000, 2017, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '/h' for help. Type '/c' to clear the current input statement.

MariaDB [(none)]> use mysql
Database changed
MariaDB [mysql]>

注意登录mysql后显示的名称是MariaDB [(none)]。 http://www.cndba.cn/dave/article/2656http://www.cndba.cn/dave/article/2656

而在之前的一套旧环境中，显示的确实mysql，而MariaDB的版本是一样的，通过which查看mysql的位置，可以确定原因，旧系统中原来默认有安装过mysql，所以遗留了之前的命令。 因为配置过环境变量，直接把旧的mysql文件rm掉，在重新开个窗口，就可以正常显示了。 http://www.cndba.cn/dave/article/2656

[root@www.cndba.cn/dave ~]# mysql -uroot -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or /g.
Your MySQL connection id is 53
Server version: 5.5.5-10.2.12-MariaDB-log MariaDB Server

Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '/h' for help. Type '/c' to clear the current input statement.

mysql> 
mysql> exit
Bye
[root@www.cndba.cn/dave ~]# which mysql
/usr/bin/mysql
[root@www.cndba.cn/dave ~]# rm -rf /usr/bin/mysql

[root@www.cndba.cn/dave ~]# mysql -uroot -p
Enter password: 
Welcome to the MariaDB monitor.  Commands end with ; or /g.
Your MariaDB connection id is 54
Server version: 10.2.12-MariaDB-log MariaDB Server

Copyright (c) 2000, 2017, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '/h' for help. Type '/c' to clear the current input statement.

MariaDB [(none)]>

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