mysql -prompt选项

使用-pormpt修改提示符。可以在登录时或者在登录后使用prompt选项来修改提示符

(1)使用mysql命令行参数修改提示符

# mysql -u root -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 27
Server version: 5.6.25 Source distribution

Copyright (c) 2000, 2015, 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 -uroot -p --prompt="\\u@\\h:\\d \\r:\\m:\\s>"
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 28
Server version: 5.6.25 Source distribution

Copyright (c) 2000, 2015, 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.

#切换数据库
root@localhost:(none) 10:05:25>use test
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
root@localhost:test 10:05:31>

(2)修改配置文件/etc/my.cnf

[mysql]
prompt="\\u@\\h:\\d \\r:\\m:\\s>"

(3)在 MySQL 中使用 prompt 命令

mysql> prompt \r:\m:\s\P>\_
PROMPT set to \'\r:\m:\s\P>\_\'
08:20:42pm> prompt
Returning to default PROMPT of mysql>
mysql>

(4)当然可以在在Bash层修改 MYSQL_PS1变量

# export MYSQL_PS1="(\u@\h) [\d]> "
# mysql -u root -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 31
Server version: 5.6.25 Source distribution

Copyright (c) 2000, 2015, 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) [(none)]> use test
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
(root@localhost) [test]>

参数辅助说明

Option	Description
\c	A counter that increments for each statement you issue
\D	The full current date
\d	The default database
\h	The server host
\l	The current delimiter (new in 5.1.12)
\m	Minutes of the current time
\n	A newline character
\O	The current month in three-letter format (Jan, Feb, …)
\o	The current month in numeric format
\P	am/pm
\p	The current TCP/IP port or socket file
\R	The current time, in 24-hour military time (0–23)
\r	The current time, standard 12-hour time (1–12)
\S	Semicolon
\s	Seconds of the current time
\t	A tab character
\U	Your full user_name@host_name account name
\u	Your user name
\v	The server version
\w	The current day of the week in three-letter format (Mon, Tue, …)
\Y	The current year, four digits
\y	The current year, two digits
\_	A space
\	A space (a space follows the backslash)
\'	Single quote
\"	Double quote
\\	A literal “\”  backslash character
\x	x, for any “x”  not listed above