使用powershell将空参数传递给可执行文件 [英] Passing empty arguments to executables using powershell

问题描述

Powershell在传递到命令时似乎丢弃了空字符串参数。我有这个代码

Powershell seems to drop empty string arguments when passed to a command. I have this code

PS D:\> $b.name = "foo bar"
PS D:\> ./echoargs $b.name
Arg 0 is D:\echoargs.exe
Arg 1 is foo bar
PS D:\> $b.name = ""
PS D:\> ./echoargs $b.name
Arg 0 is D:\echoargs.exe

你可以假设$ b有一个'name'成员。我怎么能将这作为参数传递给exe，即使值是一个空字符串。我尝试使用调用运算符没有成功。

You can assume that $b has a 'name' member. How can i pass this as an argument to the exe even when the value is an empty string. I've tried using the call operator with no success.

推荐答案

如果你想要一个空字符串，参数如下：

If you want an empty string to appear try escaped quotes around the argument like so:

PS> $b = [psobject]@{name = ''}
PS> echoargs `"$($b.Name)`"
Arg 0 is <>

Command line:
"C:\Users\Keith\Pscx\Trunk\Src\Pscx\bin\Release\Apps\EchoArgs.exe"  ""

注意，我在V3上测试了这个，所以我不知道行为是否会在V2上完全相同。

Note that I tested this on V3 so I'm not sure if the behavior will be exactly the same on V2.

这篇关于使用powershell将空参数传递给可执行文件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！