prompt更改MySQL登陆后的提示符

临时生效

mysql> prompt u@standby 
:m:s >
PROMPT set to 'u@standby 
:m:s >'
root@standby 11:30:57 >
root@standby 11:30:58 >

永久生效

更改配置文件：my.cnf

[mysql]
prompt="\r:\m:\s> "


[mysql]
no-auto-rehash
prompt="\U \r:\m:\s> "

[root@standby ~]# mysql -u root -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or g.
Your MySQL connection id is 2
Server version: 5.1.72 Source distribution

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.

root@localhost 10:23:30> 
root@localhost 10:23:32>