How can I determine if Apache is installed on a system?

Question

I have Linux Mint on my computer but I don't know how to find out whether Apache2 is on it or where it is actually installed. I run my web browser (PHP installed) with http://localhost as a URL and it works.

you want to know the path where are the files from that site? — Francisco Tapia, Apr 24 '15 at 17:03

score 57 · Accepted Answer · answered Feb 09 '12 at 14:23

I would recommend

dpkg --get-selections | grep apache

It lists all installed packages that contain "apache" in their name. For example:

apache2                                         install
apache2-doc                                     install
apache2-mpm-prefork                             install
apache2-utils                                   install
apache2.2-bin                                   install
apache2.2-common                                install
libapache2-mod-php5                             install
libapache2-svn                                  install

It indicates that the package apache2 is installed on the system.

Another approach, to find any running HTTP daemon on the default port would be:

sudo lsof -nPi | grep ":80 (LISTEN)"

Which lists something like:

apache2    1026     root    4u  IPv6    3739      0t0  TCP *:80 (LISTEN)
apache2    3966 www-data    4u  IPv6    3739      0t0  TCP *:80 (LISTEN)
apache2    4014 www-data    4u  IPv6    3739      0t0  TCP *:80 (LISTEN)
apache2    4015 www-data    4u  IPv6    3739      0t0  TCP *:80 (LISTEN)
apache2    4016 www-data    4u  IPv6    3739      0t0  TCP *:80 (LISTEN)

``-bash: dpkg: command not found`` is the above done in a certain directory? — elliotrock, Jun 19 '17 at 01:04
`-bash: dpkg: command not found` same error on aws linux even tried with sudo. — Krishnadas PC, Jul 04 '18 at 12:28
This question is about Linux Mint. Using dpkg on platforms that don't have it is pointless. — Oliver Salzburg, Jul 04 '18 at 12:39

Frédéric Hamidi · Answer 2 · 2012-02-09T14:20:49.660

15

Try the which command:

# which apache2

In my experience, the Apache binary is located in /usr/sbin on most installations.

edited Feb 09 '12 at 14:20

answered Feb 09 '12 at 14:09

Frédéric Hamidi

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Depending on distro you might also try which with 'apache' and 'httpd' – siliconrockstar Apr 24 '15 at 17:00

score 7 · Answer 3 · edited Aug 24 '15 at 09:07

7

To check whether if apache is running or not (the status), type:

sudo service apache2 status

at the command line.

edited Aug 24 '15 at 09:07

bertieb

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answered Aug 24 '15 at 05:32

Sukhpreet Singh

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This only works where Apache is installed as a (`sysv` etc) service; which admittedly will cover a lot of cases. – bertieb Aug 24 '15 at 08:03

score 3 · Answer 4 · answered Feb 09 '12 at 14:08

3

Just do a which httpd as user root.

answered Feb 09 '12 at 14:08

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Afraid to say, but on Mint (a Debian derivative) it would be `apache` or `apache2`, but not `httpd` ... – 0xC0000022L Feb 09 '12 at 14:12

score 3 · Answer 5 · answered Feb 09 '12 at 14:09

As I recall, Mint is based on Ubuntu, so you should be able to check apt-cache policy apache2:

$ apt-cache policy apache2
apache2:
  Installed: (none)
  Candidate: 2.2.20-1ubuntu1.1
  Version table:
     2.2.20-1ubuntu1.1 0
        500 http://us.archive.ubuntu.com/ubuntu/ oneiric-updates/main amd64 Packages
        500 http://security.ubuntu.com/ubuntu/ oneiric-security/main amd64 Packages
     2.2.20-1ubuntu1 0
        500 http://us.archive.ubuntu.com/ubuntu/ oneiric/main amd64 Packages

In this case, you can see it's not installed on my system. If you haven't asked for it to be installed, it's probably not -- I doubt it's part of the default distribution.

score 1 · Answer 6 · edited Dec 27 '19 at 15:28

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Try this bash command:

if [[ -z $(apache2 -v 2>/dev/null) ]] && [[ -z $(httpd -v 2>/dev/null) ]]; then echo "Apache not found"; fi

edited Dec 27 '19 at 15:28

zx485

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answered Dec 27 '19 at 11:26

ZYX Rhythm

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score 0 · Answer 7 · answered Apr 24 '15 at 16:59

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As root, you can test if apache is running under process name httpd, apache, or apache2, using

ps -A | grep 'apache\|httpd'

But again, this will only find apache if the process is running.

answered Apr 24 '15 at 16:59

siliconrockstar

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If works even if you are not root. – Hastur Apr 24 '15 at 17:17
Ah cool, wasn't sure if non-privileged users could list global processes, thanks. – siliconrockstar Apr 25 '15 at 02:31

How can I determine if Apache is installed on a system?

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