How to Connect to MySql Database using MAC terminal

1. Open your terminal. 

2. Check your current directory by typing pwd.
$ pwd

Output :
/usr/local/mysql/bin
your directory should be the bin folder of mysql else go to that 
directory by typing.
$ cd /usr/local/mysql/bin


3. When you are in mysql bin folder login to your mysql database 
using below command and enter password.
$ ./mysql -u root -p
Enter password: 
Output :

Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 93
Server version: 5.7.19 MySQL Community Server (GPL)

Copyright (c) 2000, 2017, Oracle and/or its affiliates. 
All rights reserved.

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>    

If you see above welcome message then you are logged in to your mysql database.