a2query

List enabled Apache modules

$ sudo a2query -m

$ sudo a2query -m [module_name]

$ sudo a2query -s

$ sudo a2query -M

$ sudo a2query -v

$ sudo a2query -c

a2query [-m [MODULE]] [-s [SITE]] [-c [CONF]] [-a] [-v] [-M] [-d] [-h]

a2query is a Debian-specific utility designed to retrieve configuration values from a locally installed Apache2 web server. It provides a robust interface primarily intended for use in maintainer scripts but also useful for system administrators.
Arguments for -c, -m, and -s options are compared flexibly, ignoring leading mod_ prefixes and .conf or .load suffixes.

-m [MODULE]

Check whether a module is enabled; returns all enabled modules if no argument provided

Check whether a site is enabled; returns all enabled sites if no argument provided

Check if a configuration is enabled; returns all enabled configs if no argument provided

Returns the current Apache2 MPM (Multi Processing Module)

Returns the installed Apache2 version

Displays the Apache2 Module Magic Version (API version) number

Suppresses output; useful when only return codes matter

Shows usage help and exits

This utility is Debian-specific and not available on other Linux distributions. Exit code 32 indicates the requested module, site, or configuration was not found.

Created as part of the Apache2 package for Debian GNU/Linux. Written by Arno Toell.

a2enmod(8), a2dismod(8), a2enconf(8), a2disconf(8), a2ensite(8), a2dissite(8), apache2ctl(8)