check_services.bash

# try to start apache, receive error

~: sudo /etc/init.d/apache2 start
 * Starting web server apache2
(98)Address already in use: make_sock: could not bind to address 0.0.0.0:8080
no listening sockets available, shutting down
Unable to open logs
   ...fail!

# see what's using the port (note that I'm searching for :80, I could also use :8080)

~: sudo netstat -tulpn| grep :80

tcp        0      0 0.0.0.0:8080            0.0.0.0:*               LISTEN      29004/apache2   
tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      28964/nginx 

# I see that apache2 is using 8080! Kill it!

~: killall -9 apache2

# Let's try again, with success

~: sudo /etc/init.d/apache2 start
 * Starting web server apache2
   ...done.