mysql修改密码

第一次登陆用临时密码：

grep 'localhost' /var/log/mysqld.log
mysql -uroot -p''

修改密码

mysql> set global validate_password_policy=0;   # 只验证长度
mysql> set global validate_password_length=6;  # 修改密码长度（默认8位）
mysql> alter user user() identified by '123456';    # 修改登陆密码

预期交互脚本修改密码

#!/bin/bash
 
temp=`awk -F: '/localhost/{print $4}' /var/log/mysqld.log  | awk  '{print $1}'`

 
expect << EOF
spawn mysql -uroot -p
expect ":" {send "$temp
"}
expect "> " {send "set global validate_password_policy=0;
"}
expect "> " {send "set global validate_password_length=6;
"}
expect "> " {send "alter user user() identified by '123456';
"}
expect "#" {send "exit
"}
EOF
echo ''