Function Open-File{
   param(
       [Parameter(Mandatory=$true)]
       $path
   )
   $paths = Resolve-Path $path -ea SilentlyContinue
   if ($paths -ne $null) {
       $paths | Foreach-Object { Invoke-Item $_ }
   } else {
       "No file matched $path."
   }
}

PS >Open-File *.log