Invoke a second script with arguments from a script

Here's an answer covering the more general question of calling another PS script from a PS script, as you may do if you were composing your scripts of many little, narrow-purpose scripts.

I found it was simply a case of using dot-sourcing. That is, you just do:

# This is Script-A.ps1

. ./Script-B.ps1 -SomeObject $variableFromScriptA -SomeOtherParam 1234;

I found all the Q/A very confusing and complicated and eventually landed upon the simple method above, which is really just like calling another script as if it was a function in the original script, which I seem to find more intuitive.

Dot-sourcing can "import" the other script in its entirety, using:

. ./Script-B.ps1

It's now as if the two files are merged.

Ultimately, what I was really missing is the notion that I should be building a module of reusable functions.

Aha. This turned out to be a simple problem of there being spaces in the path to the script.

Changing the Invoke-Expression line to:

Invoke-Expression "& `"$scriptPath`" $argumentList"

...was enough to get it to kick off. Thanks to Neolisk for your help and feedback!

Much simpler actually:

Method 1:

Invoke-Expression $scriptPath $argumentList

Method 2:

& $scriptPath $argumentList

Method 3:

$scriptPath $argumentList

If you have spaces in your scriptPath, don't forget to escape them `"$scriptPath`"

Invoke-Expression should work perfectly, just make sure you are using it correctly. For your case it should look like this:

Invoke-Expression "$scriptPath $argumentList"

I tested this approach with Get-Service and seems to be working as expected.