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Let's install nginx web server on our local machine.

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nginx Web server is the most vanilla example of a web application.

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For your information, we are running Ubuntu 16.4 on this

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machine and now let's start with switching to the root user

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privileges. As you can see, we have moved to root privileges.

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Now we can start our installation by first of all, downloading

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the PGP or Pretty Good Privacy key for nginx.

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The purpose of doing so, is to make sure that when we install

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nginx, the binaries are verified, the key has been downloaded.

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Now let's switch to etc/apt directory.

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With ls command, let's list out the contents.

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We have a bunch of files here, but what we need is sources.list file.

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So let's open sources.list with Nano text editor.

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You can use any text editor you like, but in this course

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we will mostly stick to Nano.

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As you can see, this file contains a lot of links.

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These links are sources for Ubuntu to find updates.

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At the end of the file, paste these two lines.

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These lines indicate the update path for nginx application

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when it gets installed and we update it further in the future.

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Let's save the file and exit Nano.

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Just to make sure we don't

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have any dangling nginx installation,

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run 'apt-get remove nginx-common',

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this command will make sure

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that any of the previously installed instance of nginx installation

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is completely removed.

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Now let's run 'apt-get update' to reflect the changes we have

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made in sources.list file.

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Let's use cd command twice to go back where we started.

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Now let's install nginx using

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'apt-get install nginx' command.

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Once the installation is complete, we can verify it by going

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to web browser and opening localhost on port 80.

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Well, the installation was successful.

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nginx is running properly.

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This was an example of installing and running

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the most simple and vanilla web application, nginx web server.