mysql怎么查看是否安装成功了

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 2023-04-01 12:34:56 UTC; 1h 23min ago
 Main PID: 1234 (mysqld)
    Tasks: 27 (limit: 4915)
   CGroup: /system.slice/mysql.service
           └─1234 /usr/sbin/mysqld

mysql -u root -p

Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 5
Server version: 8.0.23 MySQL Community Server - GPL

Copyright (c) 2000, 2023, Oracle and/or its affiliates.

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>

ls /etc/mysql/my.cnf

cat /etc/mysql/my.cnf

mysql --version

sudo systemctl start mysql