Why does the `using` scope work locally with Start-Job, but not Invoke-Command?

by

This is true when using “using” because the definition of using states,

Beginning in PowerShell 3.0, you can use the Using scope modifier to identify a local variable in a remote command

Anytime you use the $using, you have to provide -ComputerName or -Session arguments whether the target server is localhost or remote.

Ex.

$myServerName="www.google.com"
Invoke-Command { ping $using:myServerName }
### BIG ERROR.

$myServerName="www.google.com"
Invoke-Command { ping $using:myServerName } -computername $env:COMPUTERNAME
### Ping response.

$myServerName="www.google.com"
Invoke-Command { ping $myServerName }
### Ping Reponse.

$using: is only supported in a few, specific contexts, which have one thing in common: code that is being run outside the current runspace – all other contexts neither require nor support it. (@mklement0)

[Invoke-Command, Start-Job, and InlineScript are known contexts which support the use of $using: to pass variables in current local session.]

Documentation on where you can use $using

More Related Contents:

  1. String handling from Powershell script
  2. Powershell script to delete 15 days old .txt files [duplicate]
  3. How to create a zip archive with PowerShell?
  4. How to run an EXE file in PowerShell with parameters with spaces and quotes
  5. Fastest Way to get a uniquely index item from the property of an array
  6. PowerShell IE9 ComObject has all null properties after navigating to webpage
  7. PowerShell script to check an application that’s locking a file?
  8. PowerShell script runs when pasted into the PowerShell window, but not when run from shortcut
  9. Lambda Expression in Powershell
  10. save PSCredential in the file
  11. Obtaining ExitCode using Start-Process and WaitForExit instead of -Wait
  12. Maximize window and bring it in front with powershell
  13. Why and how are these two $null values different?
  14. A better way to check if a path exists or not in PowerShell [closed]
  15. ConvertTo-Csv Output without quotes
  16. Create directory if it does not exist
  17. PowerShell – get process ID of called application
  18. Delete all files and folders but exclude a subfolder
  19. Start-Process with PowerShell.exe exhibits different behavior with embedded single quotes and double quotes
  20. Can the following Nested foreach loop be simplified in PowerShell?
  21. Add Write-Progress to Get-Job/Wait-Job
  22. How to split string by string in Powershell
  23. Powershell: Colon in commandlet parameters
  24. Why is $false -eq “” true?
  25. powershell function switch param with string array
  26. Boolean literals in PowerShell
  27. How to uninstall an app that another user installed?
  28. Difference between PowerShell Console and PowerShell ISE
  29. Uploading file to HTTP via Powershell
  30. Unix newlines to Windows newlines (on Windows)

Leave a Comment