how to setup mysql database
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1.  install MySQL

    sudo apt-get install mysql-server


2.  to check whether the MySQL server is running

    sudo netstat -tap | grep mysql


   * if not running, start it

     sudo /etc/init.d/mysql restart


3. change (sudo nano /etc/mysql/my.cnf)

   bind-address            = 192.168.1.100
   sudo /etc/init.d/mysql restart