Ubuntu MySQL 5.6 version removal/installation/encoding configuration file configuration

a. sudo apt-get autoremove --purge mysql-server*
b. sudo apt-get remove mysql-server
c. sudo apt-get autoremove mysql-server
d. sudo apt-get remove mysql-common (very important)

dpkg -l |grep ^rc|awk '{print $2}' |sudo xargs dpkg -P

a. sudo apt-get install mysql-server
b. sudo apt-get install mysql-client
c. sudo apt-get install php5-mysql (installing php5-mysql is to connect php and mysql)

service mysql start (Start mysql) 
service mysql stop (Shut down mysql) 
service mysql restart (Restart mysql)

mysql -u root -p 123456 (123456 is the password you set for yourself)

show variables like '%character%'; 
[python] view plain copy
mysql> show variables like 'character%'; 
+--------------------------+----------------------------+ 
| Variable_name | Value | 
+--------------------------+----------------------------+ 
| character_set_client | utf8 | 
| character_set_connection | utf8 | 
| character_set_database | latin1 | 
| character_set_filesystem | binary | 
| character_set_results | utf8 | 
| character_set_server | latin1 | 
| character_set_system | utf8 | 
| character_sets_dir | /usr/share/mysql/charsets/ | 
+--------------------------+----------------------------+

cd /etc/mysql/my.cnf (When modifying the code, pay attention to your own MySQL version and system, which may be different) 
sudo chmod 775 my.cnf 
sudo vim my.cnf

[python] view plain copy
[mysqld] 
character-set-server=utf8