When I try to start XAMPP with /opt/lampp/lampp start command it gives me a message like this.
Starting XAMPP for Linux 1.7.7...
XAMPP: Another web server daemon is already running.
XAMPP: XAMPP-MySQL is already running.
XAMPP: XAMPP-ProFTPD is already running.
XAMPP for Linux started.
Best Answer
I have similar problem and found the issue caused another service already running on port 443 (SSL).
Check running listener: sudo netstat -tunap | grep LISTEN, Mine got vmware-hostd and cupsd listed.
Refer to http://www.apachefriends.org/en/xampp-linux.html , we need turn of lamp's SSL service using this command: sudo /opt/lampp/lampp stopssl , the command deactivates the SSL support permanently.
Now you can start xampp: sudo /opt/lampp/lampp start