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- Okay, so in this section,

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we're gonna download and
install the Terraform CLI.

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This is one of the
easiest software packages

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that you'll ever have to install.

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There's two main ways to do this.

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The first way is to install the CLI

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on your laptop or your work station

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or whatever you're using.

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And then the other way is
to do it through docker.

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They're both very, very simple.

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So let's just go ahead and get started.

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So, first we just browse to terraform.io.

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This is just the homepage
with HashiCorp's website

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for Terraform.

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And then we simply select download CLI,

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and then you'll find your version in here.

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I'm running MacOS, so
I'm gonna select that.

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But you can see that it's
supported on FreeBSD, Linux,

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OpenBSD, Solaris and Windows.

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So we're gonna select MacOS,

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and this is gonna download a zip file.

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So we'll just tell it to
open, go ahead and open that.

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Okay, so

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this has unzipped the
file, and it contains

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simply one file called Terraform.

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It's a binary executable.

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And then we simply have to move this

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to someplace in the path.

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And you can put this anywhere
you like on your file system.

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I usually use user local
bin, 'cause I'm on a Mac,

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and that's a convenient location
that's already in my path.

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So

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we're just going to go to a command line,

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and we're gonna move that file.

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And it downloaded as Terraform 2

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because I already had
another copy of Terraform,

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but you will probably just
see the filename Terraform.

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Okay.

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So now, Terraform is installed.

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Okay, so 12.13, that was the
version that we were expecting.

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So that's it for installing Terraform.

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It's one of the simplest
things, it's a single binary.

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Very, very simple.

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There is another way, though,
which is to use docker.

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So this is also very common.

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Docker is a great way to use Terraform

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because it's always going to
run in a Linux environment,

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and so that's a good way to ensure that

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all pathing and everything is consistent.

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So if you're on Windows or on Mac,

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I think it's a good idea to
run Terraform inside a docker.

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And so the way to do that

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is that you can simply docker pull

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HashiCorp.

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And you can use latest.

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And then once you're a little bit further

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into developing your
Terraform, you probably

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don't wanna use latest.

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And so you can specify.

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You can see this is the
same version, 0.12.13,

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this is the same version
from the example above.

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And we can run it.

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Same way we did before.

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Okay, and that needs to be qualified.

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Okay, so that one worked,
that one ran inside a docker.

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If we just run

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Terraform that's running from the Mac,

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and if we run

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docker run, then it runs
in a docker container.

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You can see there's a tiny bit of delay

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when we run it in docker,
because it has to start a VM

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and run it that way.

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But I encourage you to run it in docker.

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Most of the time, if you're
gonna be running this

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in a continuous delivery system,

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that that's gonna be
running inside a docker.

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And we will be talking
about continuous delivery

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in one of the later lessons.