====Step 0: Install Python 3.5 :======

 

 

$ sudo apt-get install build-essential checkinstall

$ sudo apt-get install libreadline-gplv2-dev libncursesw5-dev libssl-dev libsqlite3-dev tk-dev libgdbm-dev libc6-dev libbz2-dev

$ cd /usr/src

$ wget https://www.python.org/ftp/python/3.5.2/Python-3.5.2.tgz

$ sudo tar xzf Python-3.5.2.tgz

$ cd Python-3.5.2

$ sudo ./configure

$ sudo make altinstall

====Step 1: Install Required Python Libraries :======

sudo python3.5 -m  pip install pypdf2 Babel passlib Werkzeug decorator python-dateutil pyyaml psycopg2 psutil html2text docutils lxml pillow reportlab ninja2 requests gdata XlsxWriter vobject python-openid pyparsing pydot mock mako Jinja2 ebaysdk feedparser xlwt

sudo python3.5 -m  pip install num2words

====Step 2: configure and install postgres If not installed:======

sudo apt-get install python-software-properties

sudo apt-get install postgresql-9.3

sudo su - postgres -c "createuser -s odoo"

sudo su - postgres -c "createuser -s YOURSYSTEM"

==== Step 3: install js libraries  If not installed:==========

sudo apt-get install node-clean-css -y

sudo apt-get install node-less

sudo apt-get install -y npm

sudo ln -s /usr/bin/nodejs /usr/bin/node

sudo apt-get install python-gevent -y

sudo npm install -g less

sudo npm install -g less-plugin-clean-css

=====Step 4: Start Odoo 11 Server========

python3.5 ./odoo-bin --addons addons/