Upgrade mysql 5.5 to 5.6 ubuntu 14.04

Standard

step 1 : take a backup

mysqldump –lock-all-tables -u root -p –all-databases > dump.sql

step 2 : remove old mysql

sudo apt-get remove mysql-server
sudo apt-get autoremove

step 3 : install new version of mysql

sudo apt-get install mysql-client-5.6 mysql-client-core-5.6

sudo apt-get install mysql-server-5.6

step 4 : restore your data

mysql -u root -p < dump.sql