mysql> grant select,insert on sakila.* to 'zl'@'localhost' identified by '123';
Query OK, 0 rows affected, 1 warning (0.00 sec)

mysql> exit
Bye
[[email protected] ~]# mysql -uzl -p123
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end
 
 with ; or \g.
Your MySQL connection id is 5
Server version: 5.7.24 MySQL Community Server (GPL)

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

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
+--------------------+
1 row in set (0.00 sec)