The following tutorial will guide you through all steps required to install VGA NVIDIA driver on Ubuntu 16.04 Xenial Xerus Linux. Let's start by detecting your NVIDIA VGA card model. Open terminal and enter a following linux command:
$  lshw -numeric -C display
or
$ lspci -vnn | grep VGA
The above commands will output your NVIDIA model number. For example:
$ lspci -vnn | grep VGA
01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GK104 [GeForce GTX 680] [10de:1180] (rev a1) (prog-if 00 [VGA controller])

Introduction

CGI ( Common gateway Interface ) is an interface between Web client and the web server that runs your CGI script/program. CGI is a quite old and was largely superseded by different programing languages such as PHP, etc. However, it still can find its place in Linux system administrator's hands as a quick tool for system monitoring and administration via web browser. This article describes in step-by-step manner how to run basic CGI scripts with various programming languages and scripts using Apache web server on Ubuntu Linux.

Install Apache

First we need to install apache web server. This is a fairly simple task and can be achieved with the apt-get command:

$ sudo apt-get install apache2

The above command will install Apache 2 web server with a default site located at: /etc/apache2/sites-available/default. When you open this default configuration site you will see that it is configured to run CGI scripts from /usr/lib/cgi-bin directory with URL alias /cgi-bin/:

This article will provide you with a core information on how to create boot-able Ubuntu Live customized isohybrid image to get you started with your own Ubuntu distro spin-off. The output image will be amd64 customized Ubuntu live image, capable to boot in all three boot modes: Legacy Bios, UEFI and SecureBoot.

The article will not get into much detail about how to perform the actual squashfs system customization. However, instead it will concentrate on all the steps regarding unpacking the official Ubuntu Iso and putting all parts back together to produce bootable isohybrid image supporting Legacy Bios, UEFI and SecureBoot modes.

Prerequisites

As always we start by prerequisites and optional package installation:
$ sudo apt-get install dumpet xorriso squashfs-tools gddrescue

Downloading Ubuntu ISO image

The first part of creating your own customized Linux distro based on the Ubuntu Linux is to download the official Ubuntu ISO image. Create a new directory custom-ubuntu to hold all files required by this project. EFI and its SecureBoot feature is not supported on i386 architecture so download any amd64 version of the Ubuntu ISO image and store it within custom-ubuntu directory:
$ mkdir custom-ubuntu
$ cd custom-ubuntu/
$ wget http://url/to/ubuntu/image.iso

This following guide will show you how to install Spotify client onUbuntu 16.04 (Xenial Xerus ) LTS 64-bit Linux. First, we start by adding a spotify repository:
$ sudo echo 'deb http://repository.spotify.com stable non-free' >> /etc/apt/sources.list
Execute the below command and import non-expired key. Most likely your numeric selection will be 1 as shown below:
# gpg --keyserver hkp://keyserver.ubuntu.com --search-key 'Spotify Public Repository Signing Key'
gpg: data source: http://91.189.89.49:11371
(1)     Spotify Public Repository Signing Key 
          4096 bit RSA key EFDC8610341D9410, created: 2017-07-25, expires: 2018-07-25
(2)     Spotify Public Repository Signing Key 
          4096 bit RSA key 13B00F1FD2C19886, created: 2015-05-28, expires: 2017-11-22 (expired)
(3)     Spotify Public Repository Signing Key 
          2048 bit RSA key 082CCEDF94558F59, created: 2012-06-25, expires: 2015-06-25 (expired)
(4)     Spotify Public Repository Signing Key 
          1024 bit DSA key 4F9946354E9CFF4E, created: 2010-06-23, expires: 2012-06-22 (expired)
Keys 1-4 of 4 for "Spotify Public Repository Signing Key".  Enter number(s), N)ext, or Q)uit > 1
gpg: /root/.gnupg/trustdb.gpg: trustdb created
gpg: key EFDC8610341D9410: public key "Spotify Public Repository Signing Key " imported
gpg: Total number processed: 1
gpg:               imported: 1
To confirm, hence list all imported keys run:
# gpg --list-keys
/root/.gnupg/pubring.kbx
------------------------
pub   rsa4096 2017-07-25 [SC] [expires: 2018-07-25]
      0DF731E45CE24F27EEEB1450EFDC8610341D9410
uid           [ unknown] Spotify Public Repository Signing Key 
Next, update packages index:
$ sudo apt-get update

The following guide will provide an information on how to install SSH Server on Ubuntu 16.04 Xenial Linux. SSH Server uses the secure shell protocol to accept connections from remote clients.

Let's start by installation of SSH package:
$ sudo apt-get install ssh

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