mysql5.6 prompt的用法详解

32哦哦

--prompt=name 参数对于做运维的人来说很重要。我们登入mysql数据库后，mysql的提示符只是一个很简单内容 mysql> ,没有其他任何信息。通过--prompt=name可以自定义提示信息，通过配置显示登入的主机地址，登陆用户名，当前时间，当前数据库schema等待。
[iyunv@zw-test-db ~]# 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 33
Server version: 5.6.23-log MySQL Community Server (GPL)
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) 05:45:21>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 05:45:56>

2.也可以把参数加到my.cnf里面
vim /etc/my.cnf
[mysql]
prompt='\\u@\\h : \\d:\\D>'
##prompt="\\u@\\h :\\d\\r:\\m:\\s>"

[iyunv@zw-test-db ~]# mysql -u root -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.6.23-log MySQL Community Server (GPL)
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) 05:49:40>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
[iyunv@localhost ~]# mysql -uroot -p -S /tmp/mysql3307.sock
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.6.36-log MySQL Community Server (GPL)

Copyright (c) 2000, 2016, 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):Thu Sep 14 19:36:09 2017>use test;
Database changed
root@localhost : test:Thu Sep 14 19:36:15 2017>
参数如下:
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   www.iyunv.net
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
登陆数据库脚本：
[iyunv@localhost ~]# cat /usr/local/bin/db
#!/bin/bash
source /etc/profile
Cmd1='mysql  -h127.0.0.1 -uroot -p'Zykj@558996' -S /tmp/mysql3307.sock -P3307 -Dtest'
Cmd2='mysql  -h127.0.0.1 -uroot -p'Zykj@558996' -S /tmp/mysql3307.sock -P3307 -Ds2166ptzy'
Test(){
    ${Cmd1} --prompt="[\u@\h:\p(\d) \R:\m:\s] mysql>" --default-character-set=utf8 -A "$@"

RETVAL=$?
return $RETVAL
}

S2166ptzy(){
     ${Cmd2} --prompt="[\u@\h:\p(\d) \R:\m:\s] mysql>" --default-character-set=utf8 -A "$@"

  RETVAL=$?
return $RETVAL
}
case $1 in
      test)
          Test
          RETVAL=$?
;;
    s2166ptzy)
          S2166ptzy
          RETVAL=$?
;;
*)
echo "USAGE: $0 {test|s2166ptzy}"
;;

esac
RETVAL=$?