Convert Ubuntu Server to authenticate with SSH key only and make user sudoer with no password

Make user Sudoer:

[code]
adduser ubuntu
usermod -aG sudo ubuntu
Edit sudoers "/etc/sudoers"password to don’t require password:
%sudo ALL=(ALL) NOPASSWD: ALL
[/code]

Edit SSH configuration to authenticate by SSH key only: /etc/ssh/sshd_config

[code]
PermitEmptyPasswords yes
PasswordAuthentication no
[/code]

ubuntu” by DudeOmega is licensed under CC BY

command ‘x86_64-linux-gnu-gcc’ failed with exit status in Python Django project

Typical error when a library that you want to install needs to compile and use some system libraries.

First make sure you have:

python-dev

gcc

[code]
apt get install python
[/code]

Other libraries that could be needed:

[code]
sudo apt-get install build-essential autoconf libtool pkg-config python-opengl python-imaging python-pyrex python-pyside.qtopengl idle-python2.7 qt4-dev-tools qt4-designer libqtgui4 libqtcore4 libqt4-xml libqt4-test libqt4-script libqt4-network libqt4-dbus python-qt4 python-qt4-gl libgle3 python-dev

[/code]