Apache's root directory in my provisions file - apache

Question

I have a question. I finally found out how to change the root directory of apache. I simply have to edit this line of code DocumentRoot /var/www/html but since vagrant is amazing and has this provision script, I thought that I could tell apache the root directory from here.
Because think of it if i could use this provision script for every time I make a new website that would save me a lot of time. I wouldn't have to like go to the config file and change it every time
ADDED:
This is how my provision script looks now:
#!/usr/bin/env bash
PROJECT="foundation"
PROJECT_LOG="foundation"
MYSQL_PASSWORD="wachtwoord"
set -o nounset -o errexit -o pipefail -o errtrace
error() {
local sourcefile=$1
local lineno=$2
echo "ERROR at ${sourcefile}:${lineno}; Last logs:"
grep "${PROJECT}" /var/log/syslog | tail -n 20
}
trap 'error "${BASH_SOURCE}" "${LINENO}"' ERR
oe() { "$#" 2>&1 | logger -t "${PROJECT}" > /dev/null; }
ol() { echo "[${PROJECT_LOG}] $#"; }
export DEBIAN_FRONTEND=noninteractive
ol 'Updating repository caches'
oe sudo apt-get -q -y update
ol 'Adding apt repositories'
oe sudo apt-get -q -y install python-software-properties
oe sudo add-apt-repository ppa:ondrej/php5-5.6
ol 'Updating repository caches (second time)'
oe sudo apt-get -q -y update
ol "Installing misc packages"
oe sudo apt-get -q -y install language-pack-nl
ol 'Installing Apache 2'
oe sudo apt-get -q -y install apache2
oe sudo systemctl restart apache2
oe sudo systemctl status apache2
ol "Installing PHP"
oe sudo apt-get -q -y install php5 libapache2-mod-php5 php5-mysql php5-curl php5-gd php5-intl php-pear php5-imagick php5-imap php5-mcrypt php5-memcached php5-ming php5-ps php5-pspell php5-recode php5-snmp php5-sqlite php5-tidy php5-xmlrpc php5-xsl php5-xcache
debconf-set-selections <<< 'phpmyadmin phpmyadmin/dbconfig-install boolean true'
debconf-set-selections <<< 'phpmyadmin phpmyadmin/app-password-confirm password ${MYSQL_PASSWORD}'
debconf-set-selections <<< 'phpmyadmin phpmyadmin/mysql/admin-pass password ${MYSQL_PASSWORD}'
debconf-set-selections <<< 'phpmyadmin phpmyadmin/mysql/app-pass password ${MYSQL_PASSWORD}'
debconf-set-selections <<< 'phpmyadmin phpmyadmin/reconfigure-webserver multiselect apache2'
ol "Installing PHPmyadmin"
apt-get install -y phpmyadmin
# Make Composer available globally
ln -s /etc/phpmyadmin/apache.conf /etc/apache2/sites-enabled/phpmyadmin.conf
ol 'Installing Sendmail'
oe sudo apt-get -q -y install sendmail
ol 'Restarting Apache 2'
oe sudo systemctl restart apache2
oe sudo systemctl status apache2
ol "Installing MySQL"
oe sudo debconf-set-selections <<< "mysql-server mysql-server/root_password password ${MYSQL_PASSWORD}"
oe sudo debconf-set-selections <<< "mysql-server mysql-server/root_password_again password ${MYSQL_PASSWORD}"
oe sudo apt-get -q -y install mysql-server mysql-client
oe sudo systemctl restart mysql
oe sudo systemctl status mysql

Answer 1

you can play with sed command to make a replacement in file, something like
sed -i "s/DocumentRoot.*/DocumentRoot <your new path>" <path to httpd/apache2.conf>
PS:
-i makes a backup of your file
DocumentRoot.* will replace all line starting with DocumentRoot (dont remember by heart if there are multiple lines starting with DocumentRoot; in this case, make the correct pattern and not wildcard)
if you have / in your new path, make sure to use \/
The other option (probably a bit more simple) is to push a new conf file under the /etc/apache2/conf-enabled/ directory with your specific setting, in case you have other settings such as VirtualHost or other it will make it more simple