Version of Apache installed on a Debian machine

[Andrew778]

How can I check which version of Apache is installed on a Debian machine?

Is there a command for doing this?

[GarryRicketson]

Yes there is a command for that.
How can I check which version of Apache is installed on a Debian machine?
But it will take me a few seconds, I don't remember offhand. When I have it, I will edit this and show you the exact command
========edit======
I don't use apache myself so I can not verify this, but you can try it:

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httpd -v or /usr/local/apache/bin/httpd -v 

======= edit again=====
It is going to depend on what version of Debian , I think, any way if the above did not work
try this, it does work for me:

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@debian:~$ /usr/sbin/apache2 -v
Server version: Apache/2.2.22 (Debian)
Server built:   Jul 20 2016 05:07:11
@debian:~$ 
 

And then from one of the many hits, in the search:
https://stackoverflow.com/questions/289 ... an-machine

ou should use apache2ctl -v or apache2 -v for newer Debian or Ubuntu distributions.

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apache2ctl -v

And last but probably what you should try first:

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man apache2

or 'man apache', The manual should show what version you have and it should be the same as the version you are using, but it will also show the command to check the version.

from apache2 manual:
APACHE2(8) apache2 APACHE2(8)

NAME
apache2 - Apache Hypertext Transfer Protocol Server

SYNOPSIS
apache2 [ -d serverroot ] [ -f config ] [ -C directive ] [
-c directive ] [ -D parameter ] [ -e level ] [ -E file ] [
-k start|restart|graceful|stop|graceful-stop ] [ -R direc���
tory ] [ -h ] [ -l ] [ -L ] [ -S ] [ -t ] [ -v ] [ -V ] [
-X ] [ -M ]

SUMMARY
apache2 is the Apache HyperText Transfer Protocol (HTTP)
server program. It is designed to be run as a standalone
daemon process. When used like this it will create a pool
of child processes or threads to handle requests.

In general, apache2 should not be invoked directly, but
rather should be invoked via /etc/init.d/apache2 or
apache2ctl. The default Debian configuration requires envi���
ronment variables that are defined in /etc/apache2/envvars
and are not available if apache2 is started directly. How���
ever, apache2ctl can be used to pass arbitrary arguments to
apache2.
====snip====comment: maybe read the entire manual , if you know how===
In the options it says :
-v Print the version of apache2, and then exit.

==============edited again====
Not intentionally being critical, or a "smart alec", nor rude, but as anyone can see, at first I did not know the answer, off hand, same as the OP, but really all they needed to do was take a quick look at the manual, and they would have found the answer,.... just saying.

[stevepusser]

You can also just run in Stretch or above:

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apt policy apache2

before Stretch:

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apt-cache policy apache2

Here are versions for different releases of Debian: https://packages.debian.org/search?sear ... ds=apache2