Access mysql (xampp) using terminal in Ubuntu 14.04

Step : 1 
$ sudo /opt/lampp/lampp start
Starting XAMPP for Linux 5.5.30-7...
XAMPP: Starting Apache...ok.
XAMPP: Starting MySQL...ok.

After start xampp server
Step : 2 
$ sudo /opt/lampp/lampp startmysql
XAMPP: Starting MySQL...already running.

Step : 3
$ /opt/lampp/bin/mysql -u root
Enter password: if any..