在 PowerShell 中安装 Chocolatey 时出现错误消息

我正在尝试安装巧克力味 http://chocolatey.org/与 PowerShell 一起使用。

推荐的安装方法是复制并粘贴以下行。

@powershell -NoProfile -ExecutionPolicy unrestricted -Command "iex ((new-object net.webclient).DownloadString('http://chocolatey.org/install.ps1'))" && SET PATH=%PATH%;%systemdrive%\chocolatey\bin

但我收到以下错误：

At line:1 char:13
+ @powershell -NoProfile -ExecutionPolicy unrestricted -Command "iex ((new-object  ...
+             ~~~~~~~~~~
Unexpected token '-NoProfile' in expression or statement.
At line:1 char:24
+ @powershell -NoProfile -ExecutionPolicy unrestricted -Command "iex ((new-object  ...
+                        ~~~~~~~~~~~~~~~~
Unexpected token '-ExecutionPolicy' in expression or statement.
At line:1 char:150
+ ... nstall.ps1'))" && SET PATH=%PATH%;%systemdrive%\chocolatey\bin
+                    ~~
The token '&&' is not a valid statement separator in this version.
At line:1 char:1
+ @powershell -NoProfile -ExecutionPolicy unrestricted -Command "iex ((new-object  ...
+ ~~~~~~~~~~~
The splatting operator '@' cannot be used to reference variables in an expression. '@powershell' can be used only as
an argument to a command. To reference variables in an expression use '$powershell'.
    + CategoryInfo          : ParserError: (:) [], ParentContainsErrorRecordException
    + FullyQualifiedErrorId : UnexpectedToken

ExecutionPolicy 设置为 RemoteSigned 并且我正在运行 Powershell v3

我尝试应用一些安装代码而不是整行，但基本上，@Powershell 之后的任何内容都是意外的标记。

您必须从 cmd.exe（“标准”命令提示符）启动该行，而不是从 PowerShell 启动。