/etc/init.d/mysqld start

service mysqld start

Centos .x 系统

sysctl  start mysqld

lsof -i :

netstat -lntup |grep 

设置密码

mysql -uroot -ppassword -e "set passowrd for root = passowrd('passowrd')"

mysqladmin -uroot passowrd "NEWPASSWORD"

更改密码

mysqladmin -uroot passowrd oldpassowrd "NEWPASSWORD"

use mysql;

update user set passowrd = PASSWORD('newpassword') where user = 'root';

flush privileges;

msyql .7以上版本修改默认密码命令      

alter user 'root'@'localhost' identified by 'root' 

show create database DB_NAME;

mysql -V

mysql -uroot -ppassowrd -e "use mysql;select version();"

mysql -uroot -ppassowrd -e "select user();"