Equivalent of *Nix 'which' command in Powershell?

New-Alias which get-command

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

gcm notepad

gcm note*

[27] » gcm note*

CommandType     Name                                                     Definition
-----------     ----                                                     ----------
Application     notepad.exe                                              C:WINDOWSnotepad.exe
Application     notepad.exe                                              C:WINDOWSsystem32notepad.exe
Application     Notepad2.exe                                             C:UtilsNotepad2.exe
Application     Notepad2.ini                                             C:UtilsNotepad2.ini

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

function which([string]$command) {
begin { $Script:ErrorActionPreference = "SilentlyContinue" }
process {
if(!$_) { $_ = $command }

Microsoft.PowerShell.CoreGet-Command $_ |
   sort {
      if($_.CommandType -match "ExternalScript|Application") {
         1000 + [array]::IndexOf( (Get-Content Env:Path).Split(";"),
                                  [IO.Path]::GetDirectoryName($_.Definition) )
      } else {
         [int]$_.CommandType
      }
   } | Select -first 1 # only return the first item
}
}

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