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So let's go back into the console and onto my Windows machine,

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and we'll execute a script directly in the PowerShell console first.

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We'll then execute a script within the PowerShell ISE, so the integrated studio.

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We'll then execute a script within the Windows terminal.

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And then, lastly,

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we'll look at how we execute a script within Visual Studio Code.

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Now when it comes to creating PowerShell scripts or even executing them,

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we have a few different options that are available to us.

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So I'm going to close my terminal down, and we'll launch that again.

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What I'm going to do first is click the Start menu and just type the word

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PowerShell and literally just go to the Windows PowerShell option,

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right‑click and choose administrator.

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And this will take me to the actual PowerShell one that's out by default.

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Now, of course, you can see it's pretty glaring colors here,

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so let's just go to Colors, and I'll change the color to be a bit darker blue.

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There we go, a bit nicer.

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Now this is the standard Windows PowerShell interface

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that's available on all Windows machines.

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Really straightforward.

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You launch it, and you can do all the standard.

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So if I do Get‑ChildItem, for example, and just execute,

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it'll give me a list of files.

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It is color‑coded, so you can see it's fairly straightforward.

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If I want to change directory, let's say I want to go to \Users\Trainer\Data\,

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then I can change directory.

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And if I wanted to execute a PowerShell script,

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I'm just going to say .\Script.ps1.

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And sure enough, it just executes the script automatically.

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So really, really straightforward.

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This is the most common way to execute scripts.

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You just launch that Windows PowerShell console.

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An actual fact, when you use other applications,

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for example, server products like SharePoint or even Exchange,

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when you launch their version of the PowerShell console,

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it's actually just built on top of the regular Windows one that's there.

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Okay, so let's just exit that one.

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The second option available to us, I'm going to type PowerShell again,

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is the one that's called PowerShell ISE.

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And we've touched on this in the past,

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so I'm going to launch this again and wait for that to load.

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Now, of course, I've got some extra pieces here,

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so I'm just going to drag this to the right.

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And what you'll see from here is we get a canvas at the top for typing.

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So let's say I was going to say Get‑ChildItem again.

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I can select it, and execute, and it shows the results in the bottom.

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At any point, of course,

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if I'm not sure what modules I have loaded or I want to

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know how to do something or I'm not sure,

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let's say I wasn't sure what Get‑ChildItem actually does,

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I can actually search for it here, click Show Details,

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and then it will list me all of the properties that are part of that function.

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It also gives me the ability to kind of,

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if I just type some values here, for example,

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just arbitrary, I can say Insert,

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and it will populate that into the bottom section.

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I can also copy that and paste it somewhere else, too.

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So it's a nice interface.

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I really like using Windows PowerShell ISE just because it's a clean interface,

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you can quickly see the code, you can execute,

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you can do all kinds of things with it as you need to.

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Now,

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the only downside here is that we're not sure exactly how long

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this is going to last because it's not really been invested in

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as an application on the machines.

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So, what do we look at replacing that with?

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Well, first off,

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you've noticed that we've been using what's called the Windows Terminal,

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so I'm going to right‑click and do Run as administrator.

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This is the old sing and new dancing kind of interface.

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What's nice about this one is that you can kind of have the ability to

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flick different versions of tabs between each other.

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So for the predominantly, we've been using PowerShell 7,

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but of course, I did flick to Windows PowerShell to look at signing,

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but I could also go to a command prompt or Azure Cloud Shell or

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any other number of things that we wish to add.

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So if I choose PowerShell 7, I get the PowerShell 7 option here,

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and I can then simply execute.

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So if I say cd and go into the Data folder,

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if I wanted to execute that script that's in there,

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same syntax again.

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Now you notice it comes back.

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It'll say, okay, unfortunately,

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it can't be loaded because running scripts has been disabled for PowerShell 7.

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So remember how we do this?

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Set‑ExecutionPolicy Unrestricted, and it comes back and it says,

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but the setting is overridden by another policy.

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So then we have to say, well, Get‑ExecutionPolicy,

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and we can see it's been defined as Restricted.

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So, but we know how to go through all of this,

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and we can change it as we need to.

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But you can run the scripts in exactly the same way by just executing them.

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Now, of course, mine's blocked here for that very reason.

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If I go back to the administrator one for Windows PowerShell,

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you can see that if I type Script on here,

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I can execute that script.

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So PowerShell 7 does have some extra security capabilities,

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which we already talked about earlier.

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Okay, so that's one option.

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But, when we were looking at building functions,

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it's not the easiest to be able to write a function,

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you know, to kind of go in and then say,

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Write‑Host, and then a message, and then do something else,

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and then close it off.

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And it kind of isn't the best interface for writing,

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which is why I really like using PowerShell ISE.

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Because if we were to do function Test, and do so,

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and then say Write‑Host, you can see I get IntelliSense as well.

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And I can say ‑ForegroundColor Green, and then I can close.

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Then I can execute the function here.

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And once I get underneath it, I can say Test, and boom, it works.

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And it's nice because it gives me a structured view.

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So what's our replacement, then?

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So clearly, it's not the Windows terminal.

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So what we're going to talk about is Visual Studio Code.

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So I'm going to right‑click here, choose Run as administrator.

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You can download this.

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It's actually a developer tool that's available for us to do things.

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I'm actually just going to drag this over a little bit here,

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and just close that,

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and get rid of that bottom section so I can show you what happens.

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Now, what we've got here is a code editor that's available to us.

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What I can do now is say File, New File,

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and let's go ahead and create a function called Show,

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let me just type Show‑Message,

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and we'll do very simple Write‑Host "This is a message" like so,

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and we'll say ‑‑‑ let me do ‑‑‑ Okay, so now we have that.

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I can say File, Save As, and then it's going to ask me where I wish to save.

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So I'm going to go to my Data folder, and I'll call this function.ps1.

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And I can go and change it in here, so you can see the list of options,

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so PowerShell.

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So function, I'll save it as that.

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And once that's done, what I can then do is go onto the section here,

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right‑click, and say Run Selection.

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And then, of course,

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what it will do is tell me that my PowerShell is actually starting up.

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So I can say switch to a different session or restart the current session.

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So I'm going to do that.

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So you can see, let me just say A for always run.

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Okay, let me get rid of the bottom section,

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and then I can select that there, and then say Run Selection.

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Okay, so it's now created that.

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I can then say Show‑Message, and it will render the message for me.

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So, very similar to the PowerShell ISE,

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except what I can do is I have this rich interface of

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where I can kind of run a single line, check a specific variable.

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I can pass values backwards and forwards.

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I can also, then see any problems that may have occurred in the code itself.

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So, for example, if I had a variable here and I had some values inside of it,

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and then I wanted to kind of get that variable,

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pipe it out, and then say Select, you know,

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the first one, for example, then what it does when it starts to check the file,

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it will actually look at that one, and IntelliSense will run.

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So I'm going to put it back to the output in the debug console,

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for example, or the terminal.

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I could then leave that to run,

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and PowerShell would automatically identify a problem.

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So, for example, it will automatically say you can't have the word Select there.

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It should be Select object, for example.

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So, it's a nice, powerful interface for actually writing and executing scripts.

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Now if I wanted to execute the specific script that we've got,

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I can say Open File, and then I can open the script that I've written before.

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You'll see it's here.

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I can then simply just go here and say Run, and this will run that for me.

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Now, of course, it comes back and complains because of security.

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And why does it complain?

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Because it has a signature associated to it.

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But if I wanted to run the individual piece,

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I can run that and then run Write‑Message here,

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and then I'm able to execute it as you would normally.

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So the signature is the bit that causes a security issue,

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but that's perfectly fine.

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But, as you can see, it straightforward.

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It lets you kind of run the PowerShell script directly in the top section to the bottom section.