apache 2.4 download code example
Example 1: apache install
sudo apt-get -o DPkg::Options::="--force-confmiss" --reinstall install apache2
sudo apt-get purge apache2
sudo apt-get install apache2
apt-get purge libapache2-mod-php5 php5
apt-get install libapache2-mod-php5 php5
Example 2: how to start apache/2.4.6 linux
sudo systemctl start httpd.service