Pass variable from batch to powershell

Question

I have a batch file that ask the user for a variable line set /p asset=. Im calling my powershell script like this

SET ThisScripts

Answer 1

If you have a file.ps1 that takes a parameter,

param($asset)
"The asset tag is $asset"

You can pass in the variable as an argument.

SET ThisScriptsDirectory=%~dp0
SET PowerShellScriptPath=%ThisScriptsDirectory%file.ps1
SET /p asset=Enter the asset name

PowerShell -NoProfile -ExecutionPolicy Bypass -file "%PowerShellScriptPath%" "%asset%"

Answer 2

param($asset)

This has to be the very first line in the PowerShell script for it to work, else it will fail.

Answer 3

You can use $env:variable_name syntax to access curent cmd environment variables from powershell. To get hold of your variable you'd use $env:asset
To try, open cmd, do set "myvar=my value", start powershell, do $env:myvar (this will simply print it, but of course you can use it as any other ps variable)

Just as a sidenote, ps has good help system. If you do help env it will list two relevant topics which you can examine in turn to get detailed information.

Hope this helps