第一个命令是设定密码的
[root@localhost lib]# mysqladmin -uroot password '123456'
然后就可以登录了，
[root@localhost lib]# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or /g.
Your MySQL connection id is 3 to server version: 4.1.11
[root@localhost lib]# mysqladmin -uroot password '123456'
然后就可以登录了，
[root@localhost lib]# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or /g.
Your MySQL connection id is 3 to server version: 4.1.11
Type 'help;' or '/h' for help. Type '/c' to clear the buffer
这时提示符就变成了
mysql>
进入数据库了！