Apache has DocumentRoot directive.
This directive sets the directory from which Apache will serve files. Unless matched by a directive like Alias, the server appends the path from the requested URL to the document root to make the path to the document. Example:
then an access to http://www.domain.com/index.html refers to /home/www/domain.com/index.html.
Finding Apache Document Root
Use grep command as follows:
# grep -i 'DocumentRoot' httpd.conf
RHEL / Red hat / Fedora / CentOS Linux specific command:
# grep -i 'DocumentRoot' /etc/httpd/conf/httpd.conf
FreeBSD specific command:
# grep -i 'DocumentRoot' /usr/local/etc/apache22/httpd.conf
# DocumentRoot: The directory out of which you will serve your DocumentRoot "/usr/local/www/apache22/data"
/usr/local/www/apache22/data is default document root for your website.
To modify DocumentRoot use vi command and change DocumentRoot:
# vi /etc/httpd/conf/httpd.conf