Can I Use PowerShell Variables in a CMD Command?

Technically, you can't just drop PowerShell variables into a CMD line because they exist in different shells. However, you can still run xcopy in PowerShell using your variables:

```powershell
$xcopyParams = @($myFile, $dest)
xcopy.exe $xcopyParams
```
This way, you take advantage of PowerShell's ability to handle executables without going through CMD explicitly.

In case you prefer sticking with CMD commands but running from PowerShell, try this approach:

```powershell
cmd.exe /c xcopy "$myFile" "$dest"
```
Still, for best practices, transitioning to PowerShell commands is a solid plan!

You could directly use the PowerShell command to do what you're trying to accomplish. Instead of xcopy, you can use the native PowerShell command `Copy-Item`, like this:

```powershell
$myFile = "C:MyDirmyfile.xlsx"
$dest = "C:MyDir"
Copy-Item -Path $myFile -Destination $dest
```
No need to call cmd.exe!

Honestly, xcopy is pretty outdated. If you're looking to make the switch to PowerShell, stick to native commands like `Copy-Item`. You'll find it much easier and versatile!

You could also build a command string in PowerShell and send it to CMD if necessary:

```powershell
$copyCommand = "xcopy "$myFile" "$dest""
Invoke-Expression $copyCommand
```
Just keep in mind that it’s better to utilize PowerShell cmdlets whenever possible for clarity and effectiveness!

Another option is to use `Start-Process` in PowerShell. Here’s how:

```powershell
$myFile = "C:MyDirmyfile.xlsx"
$dest = "C:MyDir"
Start-Process -FilePath "xcopy.exe" -ArgumentList $myFile, $dest
```
Using `Start-Process` can help you pass the arguments easily without the hassle of shell boundaries.