Powershell running a command from variable

Question

I am trying to run a command that I have stored as a string in a variable, however when I try to run it with "Invoke-Command" I am told it needs to be "ScriptBlock" and not a string. The command is:

ASIMPORT.EXE -rexactdb-01 -DTEST001 -u -~ I -URL X:\test.xml -Tglentries -OPT18 –Oauto

I am trying to run it as:

Invoke-Command -ScriptBlock $command

Tried with and without "ScriptBlock", always get the same error. Googling it, I honestly do not understand how should I approach the solution, so any advice is appreciated.

Paweł Dyl · Accepted Answer · 2018-09-20 07:25:26Z

5

Instead of Invoke-Command, you need Invoke-Expression:

$command = 'svn help patch'
Invoke-expression $command

See cmdlet description:

The Invoke-Expression cmdlet evaluates or runs a specified string as a command and returns the results of the expression or command. Without Invoke-Expression, a string submitted at the command line would be returned (echoed) unchanged.

answered Sep 20, 2018 at 7:25

Paweł Dyl

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1 Comment

Paul Russell Over a year ago

This is the most useful answer, since Invoke-Command does not allow any results to be returned from the command.

guiwhatsthat · Accepted Answer · 2018-09-20 07:15:08Z

2

Define your variable as a scriptblock.

Like that:

$ScriptBlock = [ScriptBlock]::Create("get-process")

Invoke-Command -ScriptBlock $ScriptBlock

answered Sep 20, 2018 at 7:15

guiwhatsthat

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Comments

Siva Rama Krishna Gaddam · Accepted Answer · 2018-09-20 09:47:43Z

1

Try Below

Invoke-Command -ScriptBlock {&$command}

answered Sep 20, 2018 at 9:47

Siva Rama Krishna Gaddam

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