diff --git a/README.md b/README.md
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+VboxExtpackAutoinstall
+===================
+Simple script for automatic installation of VirtualBox Extension Pack.
+This is useful if your Linux Distribution doesn't come with Extension Pack installed by default.
+
+# Usage
+Just run the script:
+```bash
+./run.sh
+```
+It will automatically download correct extension pack version and handle the installation process.
+
+# VirtualBox / Extension Pack version upgrade
+If the extension pack stops working due to a version upgrade, just re-run the script:
+```bash
+./run.sh
+```
+It will automatically remove old version and fetch the new one.
diff --git a/config.sh b/config.sh
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+++ b/config.sh
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+#!/usr/bin/env bash
+# @K.Dziuba
+# Virtual Box Extension Pack Automatic (Re)Install Script - Config File
+
+
+# ===========================
+#  General settings
+# ===========================
+
+# VirutalBox version (i.e. "6.1.30")
+VBOX_VERSION="`getVboxVersion`"
+
+# download source
+REPOSITORY="https://download.virtualbox.org/virtualbox"
+FILE_NAME="Oracle_VM_VirtualBox_Extension_Pack-$VBOX_VERSION.vbox-extpack"
+
+# save location (will be removed automaticaly)
+SAVE_LOCATION="/tmp/$FILE_NAME"
+
+# package name (will be use for removing the old Extension Pack version)
+INSTALL_NAME="Oracle VM VirtualBox Extension Pack"
+
+
+# ===================================
+#  Auth settings
+# ===================================
+# enable root authentication types
+# -----------------------------------
+
+# enable for sudo authentication (recommended for Terminal)
+authWithSudo='yes'
+
+# enable for polkit/pkexec authentication (GUI only)
+# authWithPkexec='yes'
+
+# enable for zensu authentication
+# authWithZensu='yes'
+
+# enable for gksu authentication
+# authWithGksu='yes'
diff --git a/run.sh b/run.sh
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+++ b/run.sh
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+#!/usr/bin/env bash
+# @K.Dziuba
+# Virtual Box Extension Pack Automatic (Re)Install Script - The Runner
+
+# ==============
+# Paths config
+# ==============
+SCRIPT_ROOT=$( readlink -f $( dirname "${BASH_SOURCE[0]}" ) )
+
+# ==============
+# Sources
+# ==============
+source src/VboxExtpackAutoinstall.sh
+source config.sh
+
+# ==================
+# Invoke the script
+# ==================
+autoSetAuthPrefix
+set -eu
+main
diff --git a/src/IO/Print.sh b/src/IO/Print.sh
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+++ b/src/IO/Print.sh
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+#!/usr/bin/env bash
+# @K.Dziuba
+# Virtual Box Extension Pack Automatic (Re)Install Script - Message/Print functions
+
+# Define colors (ANSI)
+C_RED='\033[0;31m'
+C_GREEN='\033[0;32m'
+C_BLUE='\033[0;34m'
+C_YELLOW='\033[1;33m'
+C_PURPLE='\033[0;35m'
+C_CYAN='\033[0;36m'
+C_NC='\033[0m' # no-color
+
+# Print error message
+# $1, $2, ... - message text 
+printError() {
+    row=1
+    while (( "$#" )); do
+        if [[ row -eq '1' ]]; then
+            >&2 echo -e "${C_RED} [ERROR] $1${C_NC}"
+        else
+            >&2 echo -e "${C_RED}         $1${C_NC}"
+        fi
+        shift
+        ((row++))
+    done
+}
+
+# Print warning message
+# $1, $2, ... - message text 
+printWarning() {
+    row=1
+    while (( "$#" )); do
+        if [[ row -eq '1' ]]; then
+            >&2 echo -e "${C_YELLOW} [WARNING] $1${C_NC}"
+        else
+            >&2 echo -e "${C_YELLOW}           $1${C_NC}"
+        fi
+        shift
+        ((row++))
+    done
+}
+
+# Print success message
+# $1, $2, ... - message text 
+printSuccess() {
+    while (( "$#" )); do
+        echo -e " ${C_GREEN}$1${C_NC}"
+        shift
+    done
+}
+
+# Print notice message
+# $1, $2, ... - message text 
+printNotice() {
+    while (( "$#" )); do
+        echo -e " ${C_PURPLE}$1${C_NC}"
+        shift
+    done
+}
+
+# Print info message
+# $1, $2, ... - message text 
+printInfo() {
+    while (( "$#" )); do
+        echo -e " ${C_CYAN}$1${C_NC}"
+        shift
+    done
+}
+
+# Print plain text message
+# $1, $2, ... - message text 
+printText() {
+    while (( "$#" )); do
+        echo -e " $1"
+        shift
+    done
+}
diff --git a/src/System/Auth.sh b/src/System/Auth.sh
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+++ b/src/System/Auth.sh
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+#!/usr/bin/env bash
+# @K.Dziuba
+# Virtual Box Extension Pack Automatic (Re)Install Script - System/Auth functions
+
+# sets the $authPrefix, if given binary exists
+# $1 - binary file
+setAuthPrefix() {
+    if which "$1" | read; then
+        authPrefix="$1"
+    else
+        printWarning "$1 not found! Skipping..."
+    fi
+}
+
+# uses setAuthPrefix() to auto-set the $authPrefix defined in the config
+autoSetAuthPrefix() {
+    authPrefix=''
+
+    # Sudo support
+    if [[ $authWithSudo == 'yes' ]]; then
+        setAuthPrefix sudo
+    fi
+
+    # Zensu support
+    if [[ $authWithZensu == 'yes' ]]; then
+        setAuthPrefix zensu
+    fi
+
+    # Gksu support
+    if [[ $authWithGksu == 'yes' ]]; then
+        setAuthPrefix gksu
+    fi
+
+    # Polkit/pkexec support
+    if [[ $authWithPkexec == 'yes' ]]; then
+        setAuthPrefix pkexec
+    fi
+}
diff --git a/src/VboxExtpackAutoinstall.sh b/src/VboxExtpackAutoinstall.sh
new file mode 100644
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+++ b/src/VboxExtpackAutoinstall.sh
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+#!/usr/bin/env bash
+# @K.Dziuba
+# Virtual Box Extension Pack Automatic (Re)Install Script
+
+source src/IO/Print.sh
+source src/System/Auth.sh
+
+# main function
+main() {
+    init
+
+    # version notice
+    if [[ $VBOX_VERSION == '' ]]; then
+        printError "Could not detect VirtualBox version!" \
+            "(VERSION = '$VBOX_VERSION')"
+        failExit
+    else
+        printText "Detected VirtualBox version: $VBOX_VERSION"
+    fi
+
+    # download new version
+    printNotice "" "Downloading the extpack ..."
+    wget "$REPOSITORY/$VBOX_VERSION/$FILE_NAME" -O "$SAVE_LOCATION" \
+        && confirmSuccess || failExit
+
+    # remove old version
+    printNotice "" "Removing old extpack version ..."
+    $authPrefix vboxmanage extpack uninstall "$INSTALL_NAME" \
+        && confirmSuccess || failExit
+
+    # install new version
+    printNotice "" "Installing new extpack version ..."
+    $authPrefix vboxmanage extpack install "$SAVE_LOCATION" \
+        && confirmSuccess || failExit
+
+    # all done
+    printSuccess "" "Installation is done!"
+    terminate
+}
+
+# print standard success message
+confirmSuccess() {
+    printSuccess "... OK!"
+}
+
+# fail and exit the script
+failExit() {
+    FLAG_FAILED=1
+    printError "... Failed!"
+    terminate
+}
+
+# returns the Virtual Box version 
+getVboxVersion() {
+    vboxmanage -v | cut -d'r' -f1
+}
+
+# pre-run function
+init() {
+    printInfo "[$0] Starting up ..."
+
+    # traps
+    trap terminate SIGINT SIGTERM ERR
+
+    # init flags
+    FLAG_FAILED=0
+}
+
+# post-run / terminate function
+terminate() {
+    printInfo "[$0] Terminating ..."
+
+    # cleanup
+    if [[ -f "$SAVE_LOCATION" ]]; then
+        rm "$SAVE_LOCATION"
+    fi
+
+    if [[ FLAG_FAILED ]]; then
+        exit 1
+    else
+        exit 0
+    fi
+}