Set path environment variable via Powershell

The below code can be used to append path environment variable.

Param 

      (

                  [Parameter(Mandatory=$false)]

                  [System.String]

                  $pathtoAppend = "C:\Tools\java\bin"

        )

$env_Path = [Environment]::GetEnvironmentVariable("Path","Machine")

$finalPath = "$env_Path;$pathtoAppend"

[Environment]::SetEnvironmentVariable("Path",$finalPath ,"Machine")

In the similar way, you can set/Append any environment variables in windows.