使用 PowerShell 获取目录中的文件名 [英] Using PowerShell to get a file name in a directory

问题描述

我有一个目录，其中包含一个名为 Bruce.txt 的文件.我需要将文件名复制到平面文件中.我尝试使用 copy-item 命令，但它复制的是内容而不是名称.

I have a directory that contains a file called Bruce.txt. I need to copy the file name to a flat file. I tried using the copy-item command but that copies the contents not the name.

是否有将 Bruce.txt(名称而不是内容)复制到平面文件的命令?所以在它完成后会有一个名为 process.txt 的文件，它的内容将是 Bruce.txt.我尝试使用

Is there a command to copy Bruce.txt (the name not the contents) to a flat file? So after it completes there will be a file called process.txt and its contents will be Bruce.txt. I tried using

Copy-Item -Path "C:\Users\Bruce\deploy\*.txt" -Destination "C:\Users\Bruce\process.txt".

deploy 内部是一个名为 Bruce.txt 的文本文件，其中包含 select count() from EMP_NR 的内容.

Inside of deploy is a text file called Bruce.txt with the contents of select count() from EMP_NR.

我需要 Bruce.txt 将名称复制到 process.txt 而不是 Select count() 等.

I need Bruce.txt the name copied to process.txt not the Select count() etc.

对于 Shell 脚本，我使用 ls 命令，它的效果很好，我可以使用 Powershell 做什么?

For Shell script I use the ls command and it works wonderful what can I use for Powershell?

推荐答案

您需要使用 Get-ChildItem cmdlet.

You need to use the Get-ChildItem cmdlet.

Get-ChildItem C:\Users\Bruce\deploy\*.txt | Select-Object -ExpandProperty Name | Out-File C:\Users\Bruce\process.txt -Force -Append

但是，当您使用 PowerShell 时，ls 在这里实际上对您有用，就像 gci 和 dir 一样Get-ChildItem 的所有别名:

However, as you're using PowerShell, ls would actually work for you here, as would gci and dir as they're all aliases for Get-ChildItem:

>  get-alias | ? {$_.DisplayName -ilike "*get-childitem*" }

CommandType     Name
-----------     ----
Alias           dir -> Get-ChildItem
Alias           gci -> Get-ChildItem
Alias           ls -> Get-ChildItem

如果您愿意，您也可以使用 > 或 >> 而不是管道到 Out-File.

You can also use > or >> instead of piping to Out-File if you so wish.

由于 Get-Childitem cmdlet 返回对象列表，因此您还需要选择要从对象中提取的信息.如果您在包含一些内容的目录中执行 ls ，您将看到内容被格式化为表格.

Because the Get-Childitem cmdlet returns a list of objects, you then need to also select which information you want to extract from the object. If you do a ls in a directory with some content, you will see the contents are formatted into a table.

通过使用 Select-Object cmdlet，您可以提取要写入文件的对象属性，在本例中为 Name 属性.

By using the Select-Object cmdlet, you can extract the object properties you want to write to your file, in this case the Name property.

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