The Apache HTTP Server, commonly known as Apache, is a free and open-source cross-platform web server, released under the terms of [Apache License 2.0](https://en.wikipedia.org/wiki/Apache_License). Apache is developed and maintained by an open community of developers under the auspices of the Apache Software Foundation.
Apache runs on 67% of all webservers in the world. It is fast, reliable, and secure. It can be highly customized to meet the needs of many different environments by using extensions and modules
Once you have Apache installed you need to know where to put your HTML documents. This location is generally referred to as the `DocumentRoot`. This location is usually `/var/www/html` on most Linux systems. Follow the instructions below to find the configuration file for Apache and the `DocumentRoot`.
#### Command
```
~$ sudo grep "DocumentRoot" -R /etc/
```
The `-R` flag will cause grep to search recursively through the `/etc` directory and print out the full path of the file that it finds the `DocumentRoot` keyword in.