To pass argument to one powershell script from another powershell script

Question

I have a two powershell scripts a.ps1 & b.ps1. Im calling b.ps1 script inside the a.ps1 script. I need to pass two variables as an arguments from a.ps1 to b.ps1 like below.

//a.ps1 Script starts here
 $variable1 ="This is Variable1"
 $variable2 ="This is Variable2"

Note: Im calling b.ps1 script inside this a.ps1 script like below and passing the above variables as an arguments to b.ps1

. C:\filepath\b.ps1 $variable1 $variable2 //Calling b.ps1 script

//b.ps1 contains below code
$getVariable1= $args[0]
$getVariable2= $args[1]
echo $getVariable1

But the above echo command from b.ps1 prints nothing. What is wrong with above arguments passing?

Answer 1

There are 2 possible issues:

• The line comment prefix is # (instead of // )
• The execution policies ( especially their defaults ) might prevent your script b.ps1 to be called. Details is this MS article ( you would be hinted at this article by powershell after attempting to run a.ps from the command line, though ).
  The linked article also details how to set the policies properly ( in a nutshell for execution from the command line: Set-ExecutionPolicy -ExecutionPolicy Bypass -Scope Process

Answer 2

What's with the extra space in the b.ps1 call?

Once I corrected that, I get the expect results. Also, you never need Write-* (echo) if all you are doing is sending to the screen. Output to the screen is the default.

Lastly, no need for the // for comments here, the # and <##> works just fine on this site, as shown below.

Environment

$PSVersionTable

<#
Name                           Value
----                           -----
PSVersion                      5.1.17763.503
PSEdition                      Desktop
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0, 5.0, 5.1.17763.503}
BuildVersion                   10.0.17763.503
CLRVersion                     4.0.30319.42000
WSManStackVersion              3.0
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
#>

Get-ExecutionPolicy
RemoteSigned

Content

# a.ps1
'running a.ps1 script, calling b.ps1'
$variable1 = "This is Variable1"
$variable2 = "This is Variable2"

.\b.ps1 $variable1 $variable2

Content

# b.ps1
'running b script'
'Showing output from a.ps1 variables'
$getVariable1= $args[0]
$getVariable2= $args[1]

$getVariable1

Results

 .\a.ps1
running a.ps1 script, calling b.ps1
running b script
Showing output from a.ps1 variables
This is Variable1