我如何问PowerShell的东西在哪里?

例如,"which notepad",它根据当前路径返回notepad.exe运行的目录。


这似乎是你想要的(我在http://huddledmasses.org/powershell-find-path/):上找到了它

Function Find-Path($Path, [switch]$All = $false, [Microsoft.PowerShell.Commands.TestPathType]$type = "Any")
## You could comment out the function stuff and use it as a script instead, with this line:
#param($Path, [switch]$All = $false, [Microsoft.PowerShell.Commands.TestPathType]$type = "Any")
   if($(Test-Path $Path -Type $type)) {
      return $path
   } else {
      [string[]]$paths = @($pwd);
      $paths += "$pwd;$env:path".split(";")

      $paths = Join-Path $paths $(Split-Path $Path -leaf) | ? { Test-Path $_ -Type $type }
      if($paths.Length -gt 0) {
         if($All) {
            return $paths;
         } else {
            return $paths[0]
         }
      }
   }
   throw "Couldn't find a matching path of type $type"
}
Set-Alias find Find-Path

看看这个PowerShell哪个。

这里提供的代码表明:

($Env:Path).Split(";") | Get-ChildItem -filter notepad.exe

我通常只输入:

gcm notepad

or

gcm note*

gcm是Get-Command的默认别名。

在我的系统上,gcm note*输出:

[27] » gcm note*

CommandType     Name                                                     Definition
-----------     ----                                                     ----------
Application     notepad.exe                                              C:\WINDOWS\notepad.exe
Application     notepad.exe                                              C:\WINDOWS\system32\notepad.exe
Application     Notepad2.exe                                             C:\Utils\Notepad2.exe
Application     Notepad2.ini                                             C:\Utils\Notepad2.ini

您将获得与您正在查找的内容相匹配的目录和命令。


当我开始在PowerShell中定制我的个人资料时,我做的第一个别名是“which”。

New-Alias which get-command

要将此添加到您的配置文件中,请键入以下内容:

"`nNew-Alias which get-command" | add-content $profile

最后一行开头的' n是为了确保它将作为一个新行开始。


在Windows 2003或更高版本(或Windows 2000/XP,如果您已经安装了Resource Kit)上尝试使用where命令。

顺便说一下,这个问题在其他问题中得到了更多的答案:

Windows上有对应的“which”吗?

PowerShell相当于Unix的哪个命令?


这是一个实际的*nix等效,即它给出*nix风格的输出。

Get-Command <your command> | Select-Object -ExpandProperty Definition

用你想要的替换就行了。

PS C:\> Get-Command notepad.exe | Select-Object -ExpandProperty Definition
C:\Windows\system32\notepad.exe

当你把它添加到你的配置文件时,你会想要使用一个函数而不是一个别名,因为你不能对管道使用别名:

function which($name)
{
    Get-Command $name | Select-Object -ExpandProperty Definition
}

现在,当你重新加载你的个人资料,你可以这样做:

PS C:\> which notepad
C:\Windows\system32\notepad.exe

Use:

function Which([string] $cmd) {
  $path = (($Env:Path).Split(";") | Select -uniq | Where { $_.Length } | Where { Test-Path $_ } | Get-ChildItem -filter $cmd).FullName
  if ($path) { $path.ToString() }
}

# Check if Chocolatey is installed
if (Which('cinst.bat')) {
  Write-Host "yes"
} else {
  Write-Host "no"
}

或者这个版本,调用原来的where命令。

这个版本也更好,因为它不局限于bat文件:

function which([string] $cmd) {
  $where = iex $(Join-Path $env:SystemRoot "System32\where.exe $cmd 2>&1")
  $first = $($where -split '[\r\n]')
  if ($first.getType().BaseType.Name -eq 'Array') {
    $first = $first[0]
  }
  if (Test-Path $first) {
    $first
  }
}

# Check if Curl is installed
if (which('curl')) {
  echo 'yes'
} else {
  echo 'no'
}

试试这个例子:

(Get-Command notepad.exe).Path

我对Which函数的命题是:

function which($cmd) { get-command $cmd | % { $_.Path } }

PS C:\> which devcon

C:\local\code\bin\devcon.exe

与Unix的快速匹配

New-Alias which where.exe

但如果它们存在,它会返回多行,然后它就变成

function which {where.exe command | select -first 1}

我喜欢Get-Command |格式列表,或更短,使用别名的两个,只用于powershell.exe:

gcm powershell | fl

你可以找到这样的别名:

alias -definition Format-List

制表符补全使用gcm。

一次列出所有选项:

set-psreadlineoption -editmode emacs

我有这个高级功能在我的PowerShell配置文件:

    function which {
    <#
    .SYNOPSIS
    Identifies the source of a PowerShell command.
    .DESCRIPTION
    Identifies the source of a PowerShell command. External commands (Applications) are identified by the path to the executable
    (which must be in the system PATH); cmdlets and functions are identified as such and the name of the module they are defined in
    provided; aliases are expanded and the source of the alias definition is returned.
    .INPUTS
    No inputs; you cannot pipe data to this function.
    .OUTPUTS
    .PARAMETER Name
    The name of the command to be identified.
    .EXAMPLE
    PS C:\Users\Smith\Documents> which Get-Command
    
    Get-Command: Cmdlet in module Microsoft.PowerShell.Core
    
    (Identifies type and source of command)
    .EXAMPLE
    PS C:\Users\Smith\Documents> which notepad
    
    C:\WINDOWS\SYSTEM32\notepad.exe
    
    (Indicates the full path of the executable)
    #>
        param(
        [String]$name
        )
    
        $cmd = Get-Command $name
        $redirect = $null
        switch ($cmd.CommandType) {
            "Alias"          { "{0}: Alias for ({1})" -f $cmd.Name, (. { which $cmd.Definition } ) }
            "Application"    { $cmd.Source }
            "Cmdlet"         { "{0}: {1} {2}" -f $cmd.Name, $cmd.CommandType, (. { if ($cmd.Source.Length) { "in module {0}" -f $cmd.Source} else { "from unspecified source" } } ) }
            "Function"       { "{0}: {1} {2}" -f $cmd.Name, $cmd.CommandType, (. { if ($cmd.Source.Length) { "in module {0}" -f $cmd.Source} else { "from unspecified source" } } ) }
            "Workflow"       { "{0}: {1} {2}" -f $cmd.Name, $cmd.CommandType, (. { if ($cmd.Source.Length) { "in module {0}" -f $cmd.Source} else { "from unspecified source" } } ) }
            "ExternalScript" { $cmd.Source }
            default          { $cmd }
        }
    }

如果你想要一个既接受管道输入又接受参数输入的命令,你应该试试这个:

function which($name) {
    if ($name) { $input = $name }
    Get-Command $input | Select-Object -ExpandProperty Path
}

复制粘贴命令到您的概要文件(记事本$profile)。

例子:

❯ echo clang.exe | which
C:\Program Files\LLVM\bin\clang.exe

❯ which clang.exe
C:\Program Files\LLVM\bin\clang.exe

可以从https://goprogram.co.uk/software/commands安装which命令,以及所有其他UNIX命令。


如果你有勺子,你可以安装一个直接克隆:

scoop install which
which notepad

There also always the option of using which. there are actually three ways to access which from Windows powershell, the first (not necessarily the best) wsl -e which command (this requires installation of windows subsystem for Linux and a running distro). B. gnuwin32 which is a port of several gnu binaries in .exe format as standle alone bundled lanunchers option three, install msys2 (cross compiler platform) if you go where it installed in /usr/bin you'll find many many gnu utils that are more up-to-date. most of them work as stand alone exe and can be copied from the bin folder to your home drive somewhere amd added to your PATH.


还有使用which的选项。实际上有三种方法可以从Windows powershell中访问

第一个(虽然不是最好的)是wsl(linux的windows子系统)

wsl -e which command 

这需要安装Linux的windows子系统和一个正在运行的发行版。

下一个是gnuwin32,它是几个。exe格式的gnu二进制文件的移植,作为独立的捆绑启动程序 第三,安装msys2(跨编译器平台),如果你去/usr/bin中安装它,你会发现很多很多最新的gnu utils。他们中的大多数工作作为独立的exe,可以从bin文件夹复制到你的家庭驱动器的某个地方,并添加到你的路径。