Open Many Files With One Command

To quickly open all files of a kind, such as all text or script files found in a folder, you should try the  Open-File function. It will accept a simple pattern, such as *.txt which opens all text files, or a*.ps1,which opens all PowerShell scripts that start with "a":

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 *.txt

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