Apache Error 98

Question

Whenever I boot up Apache, this error occurs:

(98)Address already in use: make_sock: could not bind to address 0.0.0.0:80
no listening sockets available, shutting down

I've dug around the forums, and found the methods used to view all processes using port 80, such as:

lsof -i | grep http

and

lsof -i | grep :80

and then kill them. For some bizarre reason, nothing comes up when I run these checks, and even without the "grep", i still cannot find anything. I've tried reinstalling apache, including purging all the files.

Answer 1

Invoke lsof -i:80 as root and you will see which processes using port 80.