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After we install mysql, we enter the MySQL command in the terminal and find that we can’t see the database we installed. This is because you don’t configure the environment variables

Install MySQL database in OS system and save it in/usr/local/MySQL by default

So how do we configure environment variables

1. Open terminal, enter: sudo Su enter to enter the system administrator management directory (of course, you need to enter your user password to enter)

2. Enter the command: VIM/etc/profile, and then enter the VIM editing interface

3. In the VIM editing interface, press I to enter the editing state. Then, you can add the path name and enter the command: export path = $path/usr/local/MySQL/bin

4. Press the ESC key to exit the editing state

5. Enter the command: WQ（ Indicates save and force exit)

6. Then I’ll call back to my previous terminal interface

7. Then enter the command: source/etc/profile in this interface to indicate that the settings will take effect immediately. Of course, it’s the same for you to restart after closing

At this time, you can enter: MySQL carriage return to test

What if the system still prompts MySQL: command not found

1. Apple – > System Preferences – > At the bottom, click Mysql to close the MySQL service in the pop-up page

2. Enter the terminal input: CD/usr/local/MySQL/bin

3. After entering, log in the administrator permission sudo Su (enter your computer password)

4. Enter the following command to disable the MySQL verification function./mysqld_ safe –skip-grant-tables & （ Note that mysqld

5. After entering, MySQL will restart automatically (you can see in the preferences that the state of MySQL will change to running)

6. Then enter the command./MySQL

7. After entering, you can see the following effect:

The comfortable MySQL > Prompt

8. Here’s how to change the password

Then enter: flush priorities

After entering, enter: set password for ‘root’ @’localhost ‘= password (‘123’)

9. Re open a terminal and enter: MySQL – uroot – P123 to enter MySQL data:

Reference: https://blog.csdn.net/adley_ app/article/details/54694230