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Next, let's look at aliases.

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Now in PowerShell,

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you know that you can run the dir command to get a listing of files and folders.

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If you're a Linux‑type person,

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obviously you know you can also use the ls command. Works the same way.

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Now what you're really though running is a

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PowerShell command called get‑childitem.

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The ls and dir commands are just aliases.

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PowerShell commands also have a lot of aliases.

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For example,

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you may see code out there that uses what looks like a cryptic command,

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gsv, but that's really just running Get‑Service.

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The full command is Get‑Service.

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Now, how did I know that Get‑Service and gsv are the same thing?

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Well, you can use Get‑Command.

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So if you see an alias like gsv, Get‑Command, the name of the alias.

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It's clear, with that little representation of the arrow,

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that gsv is resolving to Get‑Service.

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And so if I then did Get‑Command Get‑Service,

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I could see, oh, yep, it's a command,

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and I see what version I'm running and the source of that.

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Obviously, taking this to the next step then is to run Help

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on Get‑Service so I can see how to use it.

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And then you use the same parameters with the alias.

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The alias is just an alternate name,

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just like a criminal alias, also known as gsv.

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Run gsv ‑Name, ‑DependentServices,

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‑DisplayName the same way you would use it with Get‑Service.

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In fact, you can also do help on the alias, and it will resolve.

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So if I want to say, hey, how do I use the dir command,

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such as it is in PowerShell, help dir will resolve to Get‑ChildItem,

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and then all those parameters,

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you can use them the same way that you would with Get‑ChildItem.

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You can use it with the alias of dir or ls.

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And if I want to find out what commands I can use with aliases,

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hey, sure enough, ask PowerShell, what commands do you know with the alias noun?

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And there are a number of them,

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and I'll let you play with the help and see how to work with those and create your own aliases.