tldr/pages/linux/a2query.md

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# a2query
> Retrieve runtime configuration from Apache on Debian-based OSes.
> More information: <https://manpages.debian.org/buster/apache2/a2query.1.en.html>.
- List enabled Apache modules:
`sudo a2query -m`
- Check if a specific module is installed:
`sudo a2query -m {{module_name}}`
- List enabled virtual hosts:
`sudo a2query -s`
- Display the currently enabled Multi Processing Module:
`sudo a2query -M`
- Display the Apache version:
`sudo a2query -v`