使用输出文件时避免换行
我对我正在编写的一个小 PowerShell 脚本感到有点沮丧。
基本上，我循环遍历文本文件，根据正则表达式模式数组检查每一行。 结果通过管道传输到输出文件 cmdlet，该 cmdlet 将其附加到另一个文本文件。
Get-ChildItem $logdir -Recurse -Include @('*.txt') | Get-Content | ForEach-Object {
Select-String $patterns -InputObject $_ | Out-File $csvpath -Append -Width 1000 }
我的问题是我无法让 out-file 省略它在 $csvpath 后面的文件中创建的那些附加换行符（每行后三个）。 我可以使用 .NET 框架类来实现相同的目标，但我宁愿坚持使用纯 PowerShell
I'm getting a little frustrated on a little PowerShell script I'm writing.
Basically I loop through text files to check every line against an array of regular expression patterns.
The result gets piped to the out-file cmdlet which appends it to another text file.
Get-ChildItem $logdir -Recurse -Include @('*.txt') | Get-Content | ForEach-Object {
Select-String $patterns -InputObject $_ | Out-File $csvpath -Append -Width 1000 }
My problem is that I can't get out-file to omit those additional line breaks it creates in the file behind $csvpath (three after each line).
I could use .NET framework classes to achieve the same thing but I'd rather stick to pure PowerShell
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请记住，Select-String 输出 MatchInfo 对象而不是字符串 - 正如此命令所示：
您要求在输出到文件之前将 MatchInfo 对象隐式呈现为字符串。由于某种原因我不明白，这会导致输出额外的空行。您可以通过指定只希望将 Line 属性输出到文件来解决此问题，例如：
Keep in mind that Select-String outputs MatchInfo objects and not strings - as is shown by this command:
You are asking for an implicit rendering of the MatchInfo object to string before being output to file. For some reason I don't understand, this is causing additional blank lines to be output. You can fix this by specifying that you only want the Line property output to the file e.g.:
为什么不使用
Add-Content？你不需要指定宽度和
-append开关，默认情况下文件大小不会加倍（尽管你可以指定编码）而且看起来像你这样的空行没有问题有。Why don't you use
Add-Content?You don't need to specify the width and
-appendswitch, the file size is not doubled by default (although you can specify encoding) and it seems that there is no problem with the empty lines like you have.