如何查询我mysql的端口

sudo systemctl status mysql

● mysql.service - MySQL Community Server
   Loaded: loaded (/lib/systemd/system/mysql.service; enabled; vendor preset: enabled)
   Active: active (running) since Mon 2023-04-10 12:34:56 UTC; 1h 23min ago
 Main PID: 12345 (mysqld)
    Tasks: 27 (limit: 4915)
   CGroup: /system.slice/mysql.service
           └─12345 /usr/sbin/mysqld

sudo netstat -tuln | grep 3306

sudo ss -tuln | grep 3306

tcp        0      0 0.0.0.0:3306            0.0.0.0:*               LISTEN

mysql -u root -p

SHOW VARIABLES LIKE 'port';

+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| port          | 3306  |
+--------------- +-------+

sudo systemctl start mysql

[mysqld]
port = 3306

sudo lsof -i :3306