自定义PowerShell提示符 - 等同于CMD的$M$P$_$+$G？

Question

我开始尝试使用PowerShell，并试图使其“表现良好”。

其中一件事是将PROMPT自定义为类似于MS-Dos上“$M$P$_$+$G”的方式：

这些都是做什么的：

字符| 描述
$m 当前驱动器字母关联的远程名称，如果当前驱动器不是网络驱动器，则为空字符串。
$p 当前驱动器和路径
$_ 回车和换行
$+ 零个或多个加号（+）字符，取决于 pushd 目录堆栈的深度，每个压入的级别一个字符
$g > ( 大于号 )

最终输出应该是这样的：

    \\spma1fp1\JARAVJ$ H:\temp
    ++>

我已经成功地将$M和$_功能（以及一个方便的历史记录功能）添加到我的提示符中，如下所示：

function prompt
{
   ## Get the history. Since the history may be either empty,
   ## a single item or an array, the @() syntax ensures
   ## that PowerShell treats it as an array
   $history = @(get-history)


   ## If there are any items in the history, find out the
   ## Id of the final one.
   ## PowerShell defaults the $lastId variable to '0' if this
   ## code doesn't execute.
   if($history.Count -gt 0)
   {
      $lastItem = $history[$history.Count - 1]
      $lastId = $lastItem.Id
   }

   ## The command that we're currently entering on the prompt
   ## will be next in the history. Because of that, we'll
   ## take the last history Id and add one to it.
   $nextCommand = $lastId + 1

   ## Get the current location
   $currentDirectory = get-location

   ## Set the Windows Title to  the current location
   $host.ui.RawUI.WindowTitle = "PS: " + $currentDirectory

   ## And create a prompt that shows the command number,
   ## and current location
   "PS:$nextCommand $currentDirectory
>"
}

但是我还没有成功复制其余部分......非常感谢您提供的技巧，这些对我很有帮助！

- Jjarava

Answer 1

这将获取 pushd 栈上位置的计数：

$(get-location -Stack).count

- EBGreen

Answer 2

看看这个是否符合你的要求：

function prompt
{
   ## Get the history. Since the history may be either empty,
   ## a single item or an array, the @() syntax ensures
   ## that PowerShell treats it as an array
   $history = @(get-history)


   ## If there are any items in the history, find out the
   ## Id of the final one.
   ## PowerShell defaults the $lastId variable to '0' if this
   ## code doesn't execute.
   if($history.Count -gt 0)
   {
      $lastItem = $history[$history.Count - 1]
      $lastId = $lastItem.Id
   }

   ## The command that we're currently entering on the prompt
   ## will be next in the history. Because of that, we'll
   ## take the last history Id and add one to it.
   $nextCommand = $lastId + 1

   ## Get the current location
   $currentDirectory = get-location

   ## Set the Windows Title to  the current location
   $host.ui.RawUI.WindowTitle = "PS: " + $currentDirectory

   ##pushd info
   $pushdCount = $(get-location -stack).count
   $pushPrompt = ""
   for ($i=0; $i -lt $pushdCount; $i++)
   {
       $pushPrompt += "+"
    }

   ## And create a prompt that shows the command number,
   ## and current location
   "PS:$nextCommand $currentDirectory `n$($pushPrompt)>"
}

- EBGreen

Answer 3

感谢EBGreens的回答，现在我的“提示符”已经能够显示堆栈的深度了：

 function prompt
 {
    ## Initialize vars
    $depth_string = ""

    ## Get the Stack -Pushd count
    $depth = (get-location -Stack).count

    ## Create a string that has $depth plus signs
    $depth_string = "+" * $depth

    ## Get the history. Since the history may be either empty,
    ## a single item or an array, the @() syntax ensures
    ## that PowerShell treats it as an array
    $history = @(get-history)


    ## If there are any items in the history, find out the
    ## Id of the final one.
    ## PowerShell defaults the $lastId variable to '0' if this
    ## code doesn't execute.
    if($history.Count -gt 0)
    {
       $lastItem = $history[$history.Count - 1]
       $lastId = $lastItem.Id
    }

    ## The command that we're currently entering on the prompt
    ## will be next in the history. Because of that, we'll
    ## take the last history Id and add one to it.
    $nextCommand = $lastId + 1

    ## Get the current location
    $currentDirectory = get-location

    ## Set the Windows Title to  the current location
    $host.ui.RawUI.WindowTitle = "PS: " + $currentDirectory

    ## And create a prompt that shows the command number,
    ## and current location
    "PS:$nextCommand $currentDirectory `n$($depth_string)>"
 }

- Jjarava

---

忘记了字符串的乘法。很好抓住了。今天早上写的VB脚本太多了。:( - EBGreen

Answer 4

以下将为您提供$m的等效值。

$mydrive = $pwd.Drive.Name + ":";
$networkShare = (gwmi -class "Win32_MappedLogicalDisk" -filter "DeviceID = '$mydrive'");

if ($networkShare -ne $null)
{
    $networkPath = $networkShare.ProviderName
}

- Dan R

Answer 5

感谢以下提示：

在PowerShell中，如何确定当前驱动器是否为网络驱动器？
在PowerShell中，如何确定驱动器的根目录（假设它是网络驱动器）

我已经成功让它工作了。

我的完整配置文件如下：

function prompt
{
   ## Initialize vars
   $depth_string = ""

   ## Get the Stack -Pushd count
   $depth = (get-location -Stack).count

   ## Create a string that has $depth plus signs
   $depth_string = "+" * $depth

   ## Get the history. Since the history may be either empty,
   ## a single item or an array, the @() syntax ensures
   ## that PowerShell treats it as an array
   $history = @(get-history)


   ## If there are any items in the history, find out the
   ## Id of the final one.
   ## PowerShell defaults the $lastId variable to '0' if this
   ## code doesn't execute.
   if($history.Count -gt 0)
   {
      $lastItem = $history[$history.Count - 1]
      $lastId = $lastItem.Id
   }

   ## The command that we're currently entering on the prompt
   ## will be next in the history. Because of that, we'll
   ## take the last history Id and add one to it.
   $nextCommand = $lastId + 1

   ## Get the current location
   $currentDirectory = get-location

   ## Set the Windows Title to  the current location
   $host.ui.RawUI.WindowTitle = "PS: " + $currentDirectory

        ## Get the current location's DRIVE LETTER
        $drive = (get-item ($currentDirectory)).root.name

        ## Make sure we're using a path that is not already UNC
        if ($drive.IndexOf(":") -ne "-1")
            {
                $root_dir = (get-wmiobject Win32_LogicalDisk | ? {$_.deviceid -eq $drive.Trim("\") } | % { $_.providername })+" "
          }
          else
          {
            $root_dir=""
          }


   ## And create a prompt that shows the command number,
   ## and current location
   "PS:$nextCommand $root_dir$currentDirectory `n$($depth_string)>"
}

- Jjarava