从命令行调用PowerShell函数 [英] Calling PowerShell function from command line

问题描述

在我的文件系统上给出以下 say-hello.ps1 文件：

  function SayHello（）
 {
 returnHello World！ 
} 
  

在命令行中调用像这样任务）：

  powershell -ExecutionPolicy unrestricted-command& {c：\say-hello.ps1; SayHello} 
  

为什么我会得到以下结果？

  SayHello：术语'SayHello'不被识别为cmdlet，
函数，脚本文件或可操作程序的名称。检查名称的拼写，或
（如果包含路径），请验证路径是否正确，然后重试。 
在行：1个字符：33 
 +& {c：\say-hello.ps1; SayHello} 
 + ~~~~~~~~ 
 + CategoryInfo：ObjectNotFound：（SayHello：String）[]，CommandNot 
 FoundException 
 + FullyQualifiedErrorId：CommandNotFoundException 
   
 
解决方案
脚本文件的范围 c： \\ say-hello.ps1 在脚本终止时结束。你可以点源文件（注意在PS1之前的。）如果你想让它的内容在当前范围内运行 - 用curlies  {...} ：
  powershell -ExecutionPolicy unrestricted-command& 。c：\say-hello.ps1; SayHello}
  
 
Given the following say-hello.ps1 file on my file system:
function SayHello()
{
    return "Hello World!"
}
called on the command line like so (it will eventually run as a Windows Scheduled Task):
powershell -ExecutionPolicy unrestricted -command "& { c:\say-hello.ps1; SayHello }"
Why am I getting the following result?
SayHello : The term 'SayHello' is not recognized as the name of a cmdlet,
function, script file, or operable program. Check the spelling of the name, or
if a path was included, verify that the path is correct and try again.
At line:1 char:33
+ & { c:\say-hello.ps1; SayHello }
+                       ~~~~~~~~
    + CategoryInfo          : ObjectNotFound: (SayHello:String) [], CommandNot
   FoundException
    + FullyQualifiedErrorId : CommandNotFoundException

解决方案
The scope of the script file c:\say-hello.ps1 ends when the script terminates. You can dot source the file (note the . before the PS1) if you would like its contents to run within the current scope -- the script block enclosed with curlies {...}:
powershell -ExecutionPolicy unrestricted -command "& { . c:\say-hello.ps1; SayHello }"


                        
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