centosにjdkとmysqlをインストールする方法

vi  /etc/profile

[root@localhost ~]# source /etc/profile  //使修改立即生效
[root@localhost ~]#echo $path  //查看path值

[root@localhost ~]# echo $path
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin:/usr/java/jdk1.8.0_25/bin:/usr/java/jdk1.8.0_25/jre/bin

# wget http://dev.mysql.com/get/mysql-community-release-el7-5.noarch.rpm
# rpm -ivh mysql-community-release-el7-5.noarch.rpm
# yum install mysql-community-server

# service mysqld restart

mysql> set password for 'root'@'localhost' =password('password');
query ok, 0 rows affected (0.00 sec)
mysql>

[mysql]
default-character-set =utf8

mysql> grant all privileges on *.* to root@'%'identified by 'password';

mysql>create user 'username'@'%' identified by 'password';