ubuntu setup

setup.sh

#!/usr/bin/env bash

# this script save my setup steps 
# tested on Ubuntu 20.04

if [ "$UID" -ne 0 ]; then
  echo "you are not root, you cannot execute this script!!!"
  exit 1
fi

apt_installed() {
  if [ $# -lt 1 ]; then
    echo "package name is required"
    return
  fi
  apt list --installed 2>/dev/null | grep "$1/" &>/dev/null
  return `echo $?`
}

snap_installed() {
  if [ $# -lt 1 ]; then
    echo "package name is required"
    return
  fi
  snap list | grep "$1 " &>/dev/null
  return `echo $?`
}

apt_key() {
  if [ $# -lt 1 ]; then
    echo "key's URL is required"
    return
  fi
  wget -q -O - $1 | apt-key add -
}

apt_repository() {
  if [ $# -lt 1 ]; then
    echo "repo's info is required"
    return
  fi
  if [[ $1 =~ ^ppa: ]]; then
    echo | add-apt-repository $1
  else
    echo "$2" >> /etc/apt/sources.list.d/"$1".list
  fi
  apt-get update
}

title_msg() {
  echo ""
  echo "#########################"
  echo "# $1"
  echo "#########################"
  echo ""
}

install() {
  if [ $# -lt 1 ]; then
    echo "package name is required"
    return
  fi
  title_msg "Install $1"
  apt-get install -y $1
}

install_with_snap() {
  if [ $# -lt 1 ]; then
    echo "package name is required"
    return
  fi
  local CLASSIC=FALSE
  local OPTIND OPT
  while getopts c OPT
  do
    case $OPT in
      c)  CLASSIC=TRUE;;
      \?) return;;
    esac
  done
  shift `expr $OPTIND - 1`

  title_msg "Install $1"
  if [ "$CLASSIC" = "TRUE" ]; then
    snap install --classic $1
    return
  fi
  snap install $1
}

UBUNTU_CODENAME=$(lsb_release -cs)

# Google Chrome
package="google-chrome-stable"
if ! apt_installed "$package"; then
  apt_key https://dl-ssl.google.com/linux/linux_signing_key.pub
  apt_repository "google-chrome" "deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main"
  install "$package"
fi

# Virtualbox
package="virtualbox-6.1"
if ! apt_installed "$package"; then
  apt_key https://www.virtualbox.org/download/oracle_vbox_2016.asc
  apt_repository "virtualbox" "deb [arch=amd64] http://download.virtualbox.org/virtualbox/debian $UBUNTU_CODENAME contrib"
  install "$package"
fi

# LibreOffice
package="libreoffice"
if ! apt_installed "$package"; then
  install "$package"
fi

# NixNote 2
package="nixnote2"
if ! apt_installed "$package"; then
  apt_repository "ppa:nixnote/nixnote2-stable"
  install "$package"
fi

# Google Drive OcamlFUSE
package="google-drive-ocamlfuse"
if ! apt_installed "$package"; then
  apt_repository "ppa:alessandro-strada/ppa"
  install "$package"
fi

# Opera
package="opera"
if ! snap_installed "$package"; then
  install_with_snap "$package"
fi

# VSCode
package="code"
if ! snap_installed "$package"; then
  install_with_snap -c "$package"
fi