xampp- unable to start apache on ubuntu 16

Question

1.sudo /opt/lampp/xampp start Starting XAMPP for Linux 7.2.2-0... XAMPP: Starting Apache...fail. XAMPP: Another web server is already running. XAMPP: Starting MySQL...already running. XAMPP: Starting ProFTPD...already running.

2. whenever i type netstat -tulpn | grep ':80\|:443' the output is (Not all processes could be identified, non-owned process info will not be shown, you would have to be root to see it all.) tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN -
   tcp6 0 0 :::80 :::* LISTEN -

3. when i type this /opt/lampp/etc/httpd.conf the post is still not saving

please help me :(

Answer 1

1. You need to find process id using sudo. Processes which are occupied by other users, their pid can not be seen to rest of the users. Only root can see these. As you have used sudo to start lampp, I am assuming you are a sudo user.

sudo netstat -lnp | grep :80
sudo netstat -lnp | grep :3306

Now you will be able to see both pids. You need to kill those processes.

sudo kill -9 <pid1>
sudo kill -9 <pid2>

2. If there are no processes running on respective ports but still same warning is visible, you can remove pid files manually.

sudo rm /opt/lampp/logs/httpd.pid
sudo rm /opt/lampp/var/mysql/<hostname>.pid