Running openssl commands in PowerShell

Question

I'm executing the following command in PowerShell:

Invoke-Expression "openssl pkcs12 -in $certCN.pfx -nocerts -nodes -out $certCN.key -password pass:1111"

It works fine, however the output from openssl is causing ugly console errors:

openssl : MAC verified OK
At line:1 char:1
+ openssl pkcs12 -in www.mywebsite.com.pfx -nocerts -node ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (MAC verified OK:String) [], RemoteException
    + FullyQualifiedErrorId : NativeCommandError

What's the best way to execute this OpenSSL command and have the output ignored or at least not interpreted as a command?

Answer 1

您不需要Invoke-Expression（事实上，it's not recommended除非在特定情况下因为它易于注射）。只需运行命令并引用需要变量字符串扩展的参数：

openssl pkcs12 -in "$certCN.pfx" -nocerts -nodes -out "$certCN.key" -password pass:1111

要忽略命令的输出，一种常用技术是管道到Out-Null。

Answer 2

我发布这篇文章五分钟后发现了这篇文章：

http://www.jonathanmedd.net/2013/07/making-native-executables-in-windows-run-quietly-in-powershell.html

显示简单地说

2>&1 

在字符串的末尾，将成功和错误重定向为null：

 Invoke-Expression "openssl pkcs12 -in $certCN.pfx -nocerts -nodes -out $certCN.key -password pass:1111" 2>&1

根据我的需要为冠军工作。