Check if file exists in environment paths

Test-ExistInEnvPath.ps1

function Test-ExistInEnvPath($fileName) {
    $envPaths = ($env:Path -split ';') | Where-Object {$_ -ne ''}
    $envPaths | ForEach-Object {
        if (Test-Path -Path (Join-Path -Path $_ -ChildPath $fileName)) {
            Write-Output $true
        } else {
            Write-Output $false
        }
    }
}