Powershell 更换周期 [英] Powershell replacing periods

问题描述

谁能告诉我他们是否认为这个 Powershell 脚本有问题.

Can anyone tell me if they think there is something wrong with this Powershell script.

Dir | 
where {$_.extension -eq ".txt"} | 
Rename-Item –NewName { $_.name –replace ".","-" }

对于当前目录中的每个文本文件，我试图用连字符替换文件名中的所有句点.提前致谢.

For each text file in the current directory, I'm trying to replace all periods in the file names with hyphens. Thanks ahead of time.

推荐答案

正如其他人所说，-replace 使用正则表达式(."是正则表达式中的特殊字符).然而，他们的解决方案忘记了文件扩展名，他们实际上正在删除它.前任.test.txt"变成test-txt"(无扩展名).更好的解决方案是:

As the others have said, -replace uses regex (and "." is a special character in regex). However, their solutions are forgetting about the fileextension and they are acutally removing it. ex. "test.txt" becomes "test-txt" (no extension). A better solution would be:

dir -Filter *.txt | Rename-Item -NewName { $_.BaseName.replace(".","-") + $_.Extension }

这也使用 -Filter 只挑选以.txt"结尾的文件，这比与 where 比较要快.

This also uses -Filter to pick out only files ending with ".txt" which is faster then comparing with where.

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