How to find out which process is using localhost:80?

Question

I'm using linux mint xfce edition, my localhost:80 was used by some program but I don't which one, when I open firefox and visit localhost:80, it says

It works! This is the default web page for this server. The web server software is running but no content has been added, yet.

I've tried to use lsof -i @localhost:80, but it returns nothing.

`lsof -i :80` also worked, what's wrong when adding `@localhost`? — flyingfoxlee, Jun 08 '13 at 02:34

score 11 · Accepted Answer · answered Jun 08 '13 at 02:11

11

netstat -anpt | grep :80 as root user should list process using port 80. With your web browser closed it can help you identify the process.

answered Jun 08 '13 at 02:11

zeropol

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your message seems to be apache one – zeropol Jun 08 '13 at 02:14
Thank you for your quick answer, it worked, actually it was apache2, and it was bounded to ipv6 address. – flyingfoxlee Jun 08 '13 at 02:22

score 2 · Answer 2 · answered Jun 08 '13 at 02:12

2

Try this:

# fuser -n tcp 80

From the manpage:

-n SPACE, --namespace SPACE
      Select  a  different  name space.  The name spaces file (file names, 
      the default), udp (local UDP ports), and tcp (local TCP ports)
      are supported.  For ports, either the port number or the symbolic name can 
      be specified.  If there is no  ambiguity,  the  shortcut
      notation name/space (e.g. 80/tcp) can be used.

answered Jun 08 '13 at 02:12

guido

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It worked, thank you, I've learned a lot from both of you. – flyingfoxlee Jun 08 '13 at 02:26
It's sad I can only click one as the accepted answer. – flyingfoxlee Jun 08 '13 at 02:27

How to find out which process is using localhost:80?

2 Answers2