mysql忘记root密码修改办法

[root@izj6c4danzl2zg703g6apoz default]# mysql -u root -p
Enter password: 
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)
[root@izj6c4danzl2zg703g6apoz default]# sudo /usr/local/mysql/support-files/mysql.server stop 
Shutting down MySQL.                                       [  确定  ]
[root@izj6c4danzl2zg703g6apoz default]# cd /usr/local/mysql/bin
[root@izj6c4danzl2zg703g6apoz bin]# sudo su
[root@izj6c4danzl2zg703g6apoz bin]# ./mysqld_safe --skip-grant-tables &
[1] 2690
[root@izj6c4danzl2zg703g6apoz bin]# 190207 14:03:01 mysqld_safe Logging to '/usr/local/mysql/var/izj6c4danzl2zg703g6apoz.err'.
190207 14:03:01 mysqld_safe Starting mysqld daemon with databases from /usr/local/mysql/var

[root@izj6c4danzl2zg703g6apoz bin]# mysql -uroot -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 85
Server version: 5.5.48-log Source distribution

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Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)

mysql> set password for 'root'@'localhost'=password('abc@123');
Query OK, 0 rows affected (0.00 sec)

mysql> exit
Bye