Script to install Virtualbox on Ubuntu

vbox-install

#!/bin/bash

# In case you want to install from a the Oracle package repository.
oracle_install ( ){
  CODENAME=`lsb_release -c | cut -f 2`
  eval sudo sh -c 'echo "deb https://download.virtualbox.org/virtualbox/debian ${CODENAME} contrib" >> /etc/apt/sources.list'
  wget -q https://www.virtualbox.org/download/oracle_vbox_2016.asc -O- | sudo apt-key add -
  sudo apt-get update && sudo apt-get install virtualbox-6.0
}

#
# Main
#
if (( EUID == 0 )); then
    echo "error: do not this script as root"
    exit 1
fi

dpkg --get-selections | grep install | grep "virtualbox-" > /dev/null 2>&1
if [ $? -eq 0 ]; then
  echo "Virtualbox is already installed"
  VB=`dpkg --get-selections | grep install | grep "virtualbox-" | awk '{print $1}'`
  echo "Removing ${VB} first."
  sudo apt-get remove ${VB} && sudo apt-get purge ${VB}
fi

sudo apt-get update

P=`apt-cache search virtualbox-5.2 | cut -f 1 -d\ `
if [ ${P}"x" = "x" ]; then
  P=`apt-cache search virtualbox-6.0 | cut -f 1 -d\ `
fi
if [ ${P}"x" = "x" ]; then
  P=`apt-cache search virtualbox | grep "^virtualbox " | cut -f 1 -d\ `
fi
if [ ${P}"x" = "x" ]; then
  echo "There is a problem identifying a package to install."
  echo "Contact your instructor."
  exit 1
fi

echo "Installing ${P}"
sudo apt-get install -y ${P}

echo "For virtualbox to work, make sure:"
echo " - secure boot is disabled in the BIOS"
echo " - VT-X or AMD-V extensions are enabled"