How-to Install PHP 7 on a Raspberry Pi

This short guide describes how to install PHP 7 on a Raspberry Pi running Raspbian Linux as operating system.

Edit the apt sources list, /etc/apt/sources.list
sudo nano /etc/apt/sources.list

Add the following lines to the file:

deb http://repozytorium.mati75.eu/raspbian jessie-backports main contrib non-free
#deb-src http://repozytorium.mati75.eu/raspbian jessie-backports main contrib non-free

Run the following commands in the terminal. You need superuser (root) access.

su
gpg --keyserver pgpkeys.mit.edu --recv-key CCD91D6111A06851
gpg --armor --export CCD91D6111A06851 | sudo apt-key add -
apt-get update
apt-get install php7.0 php7.0-curl php7.0-gd php7.0-imap php7.0-json php7.0-mcrypt php7.0-mysql php7.0-opcache php7.0-xmlrpc

And if you want to install Apache 2 + mod_php:
apt-get install apache2 libapache2-mod-php7.0

Node.js on Raspberry Pi installation guide

This short guide teaches you how to install the Node.js framework on your Raspberry Pi running Raspbian.

Run the following commands in the terminal:
sudo add-apt-repository -y ppa:chris-lea/node.js
sudo apt-get update
sudo apt-get install -y python-software-properties python g++ make
sudo apt-get install -y nodejs

NGINX on Raspberry Pi installation guide

This short guide teaches you how to install the NGINX webserver on your Raspberry Pi running Raspbian.

Run the following commands in the terminal:
sudo apt-get update
sudo apt-get install -y nginx php5-fpm
sudo service nginx start

How-To Install Wolfram Mathematica on the Raspberry Pi

This short guide describes how to install Wolfram Language and Mathematica on your Raspberry Pi running Raspbian OS.

In the terminal run the following commands:

sudo apt-get update
sudo apt-get install -y wolfram-engine