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# Install

## Quick install

### Ubuntu (version 12.04+)

If you use Ubuntu, you can install the FNSS core library along with the Python interpreter and all required dependencies by running the following script:

    $ curl -L https://github.com/fnss/fnss/raw/master/core/ubuntu_install.sh | sh

You need superuser privileges to run this script.

### Other operating systems

The easiest way to install the core Python library is to download it and install it from the Python Package Index. To do so, you must have Python (version >= 2.6) installed on your machine and either pip or easy_install.

To install the FNSS core library using easy_install open a command shell and type:

    $ easy_install fnss

If you use pip, type instead:

    $ pip fnss

Depending on the configuration of your machine you may need to run pip or easy_install as superuser. Whether you use pip or easy_install, the commands reported above will download the latest version of the FNSS core library and install it on your machine together with all required dependencies.

## Installing from source

You can install from source by downloading a source archive file (tar.gz or zip) from the FNSS website or by checking out the source files from the GitHub repository.

### Source archive file

> 1. Download the source (tar.gz or zip file) from http://fnss.github.io

> 2. Unpack, open a command shell and move to the main directory of the core library (it should have the file setup.py).

> 3. Run this instruction to build and install:

>        $ python setup.py install

### Git repository

> 1. Clone the FNSS repostitory:

>        $ git clone https://github.com/fnss/fnss.git

> 2. Change directory to fnss/core:

>        $ cd fnss/core

> 3. Run:

>        $ python setup.py install

If you don’t have permission to install software on your system, you can install into another directory using the –user, –prefix, or –home flags to setup.py.

For example:

    $ python setup.py install --prefix=/home/username/python

or:

    $ python setup.py install --home=~

or:

    $ python setup.py install --user

If you didn’t install in the standard Python site-packages directory you will need to set your PYTHONPATH variable to the alternate location. See http://docs.python.org/inst/search-path.html for further details.

## Requirements

### Python

To use FNSS you need Python version 2.6 or later (2.7 or later recommended). FNSS fully supports Python 3

### Required packages

The following packages are needed by FNSS to provide core functions.

#### NetworkX (version >= 1.6)

NetworkX is a Python package for the creation, manipulation, and study of the structure, dynamics, and functions of complex networks.

> - Download: http://networkx.github.io

#### NumPy (version >= 1.4)

Provides matrix representation of graphs and is used in some graph algorithms for high-performance matrix computations.

> - Download: http://scipy.org/Download

#### Mako (version >= 0.4)

It is a templating engine used to export FNSS topologies.

> - Download: http://www.makotemplates.org/download.html

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