Ubuntu Pip3
sudo apt-get -y install python3-pip
Grumpy Gharial
sudo apt-get -y install python3-pip
sudo apt install python3-pip
curl https://bootstrap.pypa.io/get-pip.py --output get-pip.py
pip3 --version
[server]$ pip3 --version
pip 18.1 from /home/username/opt/python-3.6.2/lib/python3.6/site-packages/pip (python 3.6)