如何抑制PowerShell中的标准错误输出? [英] How do I suppress standard error output in PowerShell?

问题描述

在自动执行某些SVN任务的PowerShell脚本中，我具有以下功能:

In a PowerShell script automating some SVN tasks I have the following function:

function SvnUrlExists($url)
{
  svn info $url | out-null 2>&1
  return $?
}

由于这明确地测试了是否存在某些SVN存储库URL，所以我对任何错误输出完全不感兴趣.但是，尽管我在PowerShell中发现了有关重定向stderr的所有建议，建议将2>&1重定向到stdout，但 这仍然会输出错误消息 :

Since this explicitly tests whether some SVN repository URL exists, I am not interested at all in any error output. However, despite everything I found about redirecting stderr in PowerShell suggesting 2>&1 to redirect it to stdout, this still outputs an error message:

svn: warning: W170000: URL 'blahblah' non-existent in revision 26762
svn: E200009: Could not display info for all targets because some targets don't exist

不幸的是，这严重破坏了我脚本的输出.

Unfortunately, this severely messes up the output of my script.

我在做什么错，我应该如何抑制此错误输出?

What am I doing wrong, and how should I suppress this error output?

推荐答案

以防其他人谷歌搜索与我相似的条款:

Just in case someone else googles for similar terms as I did:

在我用额头撞了好几个小时之后，我当然在在此处发布问题后的几分钟内找到了解决方案:

After I have been banging my forehead against this for hours, of course I found the solution within minutes after posting the question here:

svn info $url 2>&1 | out-null

这就像一个护身符.

这篇关于如何抑制PowerShell中的标准错误输出?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！