mysql相关命令

1.检查MySQL服务器是否启动

ps -ef | grep mysqld
如何显示如下，证明已经启动

localhost:~ mhx$ ps -ef | grep mysqld

    0  1053     1   0  9:59上午 ttys000    0:00.03 /bin/sh /usr/local/mysql/bin/mysqld_safe --datadir=/usr/local/mysql/data --pid-file=/usr/local/mysql/data/localhost.pid

   74  1171  1053   0  9:59上午 ttys000    0:00.48 /usr/local/mysql/bin/mysqld --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data --plugin-dir=/usr/local/mysql/lib/plugin --user=mysql --log-error=/usr/local/mysql/data/localhost.err --pid-file=/usr/local/mysql/data/localhost.pid

  501  1242  1235   0 10:07上午 ttys001    0:00.00 grep mysqld

2.启动mysql服务器

localhost:~ mhx$ cd /usr/local/mysql/support-files/

localhost:support-files mhx$ sudo ./mysql.server start

3.登陆数据

localhost:support-files mhx$ cd /usr/local/mysql/bin/

localhost:bin mhx$ ./mysql -u root -p

3.查看数据库

mysql> show databases;