Version of Apache installed on a Debian machine - apache

Question

How can I check which version of Apache is installed on a Debian machine?
Is there a command for doing this?

Answer 1

Try apachectl -V:
$ apachectl -V
Server version: Apache/2.2.9 (Unix)
Server built: Sep 18 2008 21:54:05
Server's Module Magic Number: 20051115:15
Server loaded: APR 1.2.7, APR-Util 1.2.7
Compiled using: APR 1.2.7, APR-Util 1.2.7
... etc ...
If it does not work for you, run the command with sudo.

Answer 2

This works for my Debian:
$ /usr/sbin/apache2 -v

Answer 3

You should use apache2ctl -v or apache2 -v for newer Debian or Ubuntu distributions.
apache:/etc/apache2# apache2ctl -v
Server version: Apache/2.2.16 (Debian)
Server built: May 12 2011 11:58:18
or you can use apache2 -V to get more information.
apache2 -V
Server version: Apache/2.2.16 (Debian)
Server built: May 12 2011 11:58:18
Server's Module Magic Number: x
Server loaded: APR 1.4.2, APR-Util 1.3.9
Compiled using: APR 1.2.12, APR-Util 1.3.9
Architecture: 64-bit
Server MPM: Worker
threaded: yes (fixed thread count)
forked: yes (variable process count)
Server compiled with....

Answer 4

The command varies depending on how your version of Linux has named the Apache Server.
On Debian and Mac OS:
apachectl -v
On Red Hat and Amazon's EC2 Linux use:
httpd -v
On other verisons of Linux try:
apache2 -v
You can use two different flags:
-v # gives you the version number
-V # gives you the compile settings including version number.
If you want to run the command with the full directory like user3786265 did but don't know where your apache is located, use the whereis command:
whereis httpd

Answer 5

I am using Red Hat Linux and the following command works:
httpd -V

Answer 6

I think you have to be sure what type of installation you have binary or source.
To check what binary packages is installed: with root rights execute following command:
dpkg -l |grep apache2
result should be something like:
dpkg -l |grep apache2
ii apache2 2.4.10-10+deb8u8 amd64 Apache HTTP Server
ii apache2-bin 2.4.10-10+deb8u8 amd64 Apache HTTP Server (modules and other binary files)
ii apache2-data 2.4.10-10+deb8u8 all Apache HTTP Server (common files)
ii apache2-doc 2.4.10-10+deb8u8 all Apache HTTP Server (on-site documentation)
To find version you can run :
apache2ctl -V |grep -i "Server version"
result should be something like:
Server version: Apache/2.4.10 (Debian)

Answer 7

Try it with sudo
apachectl -V
-bash: apachectl: command not found
sudo apachectl -V
Server version: Apache/2.4.6 (Debian)
Server built: Aug 12 2013 18:20:23
Server's Module Magic Number: 20120211:24
Server loaded: APR 1.4.8, APR-UTIL 1.5.3
Compiled using: APR 1.4.8, APR-UTIL 1.5.2
Architecture: 32-bit
Server MPM: prefork
threaded: no
forked: yes (variable process count)
Server compiled with....
bla bla....

Answer 8

You can also use the package manager directly:
dpkg -l | grep apache
This isn't focused on just version number, but it will make a broader search, which will give you other useful information, like module versions.

Answer 9

Another way round to check a package (including Apache) installed version on Debian-based system, we can use:
apt-cache policy <package_name>
e.g. for Apache
apt-cache policy apache2
which will show something like (look at the Installed line):
$ apt-cache policy apache2
apache2:
Installed: (none)
Candidate: 2.2.22-1ubuntu1.9
Version table:
2.2.22-1ubuntu1.9 0
500 http://hk.archive.ubuntu.com/ubuntu/ precise-updates/main amd64 Packages
500 http://security.ubuntu.com/ubuntu/ precise-security/main amd64 Packages
2.2.22-1ubuntu1 0
500 http://hk.archive.ubuntu.com/ubuntu/ precise/main amd64 Packages

Answer 10

For me this works on Debian 6 (Squeeze):
Linux www809 2.6.26-2-xen-686 #1 SMP Wed Sep 21 09:56:47 UTC 2011 i686 GNU/Linux
I had to go to the right path:
/usr/local/apache/bin** $ **./apachectl -v
./apachectl: line 71: ulimit: open files: cannot modify limit: Operation not permitted
Server version: Apache/2.2.21 (Unix)
Server built: Dec 17 2011 19:57:53

Answer 11

I tried running the command "httpd -V" and "apachectl -V", but I could not execute and was getting the error:
-ksh: php: not found [No such file or directory]
Then I tried another way. I went to the Apache directory on my server and then tried executing the command:
./apachectl -v
This worked for me and returned the output:
Server version: Apache/2.2.20 (Unix)
Server built: Sep 6 2012 17:22:16
I hope this helps.

Answer 12

You can use apachectl -V or apachectl -v. Both of them will return the Apache version information!
xgqfrms:~/workspace $ apachectl -v
Server version: Apache/2.4.7 (Ubuntu)
Server built: Jul 15 2016 15:34:04
xgqfrms:~/workspace $ apachectl -V
Server version: Apache/2.4.7 (Ubuntu)
Server built: Jul 15 2016 15:34:04
Server's Module Magic Number: 20120211:27
Server loaded: APR 1.5.1-dev, APR-UTIL 1.5.3
Compiled using: APR 1.5.1-dev, APR-UTIL 1.5.3
Architecture: 64-bit
Server MPM: prefork
threaded: no
forked: yes (variable process count)
Server compiled with....
-D APR_HAS_SENDFILE
-D APR_HAS_MMAP
-D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)
-D APR_USE_SYSVSEM_SERIALIZE
-D APR_USE_PTHREAD_SERIALIZE
-D SINGLE_LISTEN_UNSERIALIZED_ACCEPT
-D APR_HAS_OTHER_CHILD
-D AP_HAVE_RELIABLE_PIPED_LOGS
-D DYNAMIC_MODULE_LIMIT=256
-D HTTPD_ROOT="/etc/apache2"
-D SUEXEC_BIN="/usr/lib/apache2/suexec"
-D DEFAULT_PIDLOG="/var/run/apache2.pid"
-D DEFAULT_SCOREBOARD="logs/apache_runtime_status"
-D DEFAULT_ERRORLOG="logs/error_log"
-D AP_TYPES_CONFIG_FILE="mime.types"
-D SERVER_CONFIG_FILE="apache2.conf"
You may be more like using apache2 -V or apache2 -v. It seems easier to remember!
xgqfrms:~/workspace $ apache2 -v
Server version: Apache/2.4.7 (Ubuntu)
Server built: Jul 15 2016 15:34:04
xgqfrms:~/workspace $ apache2 -V
Server version: Apache/2.4.7 (Ubuntu)
Server built: Jul 15 2016 15:34:04
Server's Module Magic Number: 20120211:27
Server loaded: APR 1.5.1-dev, APR-UTIL 1.5.3
Compiled using: APR 1.5.1-dev, APR-UTIL 1.5.3
Architecture: 64-bit
Server MPM: prefork
threaded: no
forked: yes (variable process count)
Server compiled with....
-D APR_HAS_SENDFILE
-D APR_HAS_MMAP
-D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)
-D APR_USE_SYSVSEM_SERIALIZE
-D APR_USE_PTHREAD_SERIALIZE
-D SINGLE_LISTEN_UNSERIALIZED_ACCEPT
-D APR_HAS_OTHER_CHILD
-D AP_HAVE_RELIABLE_PIPED_LOGS
-D DYNAMIC_MODULE_LIMIT=256
-D HTTPD_ROOT="/etc/apache2"
-D SUEXEC_BIN="/usr/lib/apache2/suexec"
-D DEFAULT_PIDLOG="/var/run/apache2.pid"
-D DEFAULT_SCOREBOARD="logs/apache_runtime_status"
-D DEFAULT_ERRORLOG="logs/error_log"
-D AP_TYPES_CONFIG_FILE="mime.types"
-D SERVER_CONFIG_FILE="apache2.conf"

Answer 13

For me apachectl -V did not work, but apachectl fullstatus gave me my version.

Answer 14

Some installations of Apache are fubar (think Oracle's packaging of it, OHS) and do not understand the -V flag, nor can be invoked directly without running into missing library errors.
Easiest way is to use the strings command (part of binutils) on the httpd binary and grep for a string that might resemble a version. For example, assuming your httpd binary is under directory /foo/bar:
$ strings /foo/bar/httpd | grep 2.2
GLIBC_2.2.5
Oracle-HTTP-Server/2.2.22 (Unix)
Success_Accepted_202
202 Accepted
Most binaries (not all) contain their version (at least their major version) as static strings. This is my go-to way to get versions (or to corroborate what a binary's help message matches what reality on the ground truly is.)

Answer 15

Or, less directly:
nmap -A localhost -p 80

Answer 16

Surely typing /usr/sbin/apache2 -v into the shell is the best and quickest way to go, by the way here's another option, just in case there's PHP too in your server and you're interested into gathering Apache version (and much more infos) in quick programmatical steps.
Just make an info.php file in your Apache web root folder (or whatever you like) and write these inside it:
<?php
phpinfo();
?>
Now go to yoursite.com/info.php (or localhost/info.php for local machines).
You'll see your Apache version in PHP Variables section, here's an example:
phpinfo() example dump page
Also, please notice that these steps obviously apply to any web server with PHP integration, so it's not limited to Apache and once created that page could be handy while developing (just don't forget to remove it on production environments!!)

Answer 17

dlocate -s apache2 | grep '^Version:'

Answer 18

works in debian 11 bullseye
/usr/sbin/apache2 -v