Increase MYsql file size Upload

[testing]

login to the server using ssh:
Copy the bellow code and it will take you to the ini file:
First it will download nano (lol I like nano), then it will cd into the etc directory and open the php.ini file for editing .

Code:

yum install nano -y && cd /etc && nano php.ini

After the php.ini file is open then press ctrl+w and then search for "upload_max_filesize", use the arrow keys to move around in the php.ini file.

I did it but what to click to save it and exit?