使用PowerShell遍历目录中的文件

How can I change the following code to look at all the .log files in the directory and not just the one file?

如何更改以下代码以查看目录中的所有.log文件而不仅仅是一个文件？

I need to loop through all the files and delete all lines that do not contain "step4" or "step9". Currently this will create a new file, but I'm not sure how to use the for each loop here (newbie).

我需要遍历所有文件并删除所有不包含“step4”或“step9”的行。目前这将创建一个新文件，但我不知道如何在这里使用for each循环（新手）。

The actual files are named like this: 2013 09 03 00_01_29.log. I'd like the output files to either overwrite them, or to have the SAME name, appended with "out".

实际文件的名称如下：2013 09 03 00_01_29.log。我希望输出文件覆盖它们，或者具有SAME名称，附加“out”。

$In = "C:\Users\gerhardl\Documents\My Received Files\Test_In.log"
$Out = "C:\Users\gerhardl\Documents\My Received Files\Test_Out.log"
$Files = "C:\Users\gerhardl\Documents\My Received Files\"

Get-Content $In | Where-Object {$_ -match 'step4' -or $_ -match 'step9'} | `
Set-Content $Out

4 个解决方案

#1

250

Give this a try:

尝试一下：

Get-ChildItem "C:\Users\gerhardl\Documents\My Received Files" -Filter *.log | 
Foreach-Object {
    $content = Get-Content $_.FullName

    #filter and save content to the original file
    $content | Where-Object {$_ -match 'step[49]'} | Set-Content $_.FullName

    #filter and save content to a new file 
    $content | Where-Object {$_ -match 'step[49]'} | Set-Content ($_.BaseName + '_out.log')
}

#2

To get the content of a directory you can use

获取可以使用的目录的内容

$files = Get-ChildItem "C:\Users\gerhardl\Documents\My Received Files\"

Then you can loop over this variable as well:

然后你也可以遍历这个变量：

for ($i=0; $i -lt $files.Count; $i++) {
    $outfile = $files[$i].FullName + "out" 
    Get-Content $files[$i].FullName | Where-Object { !($_ -match 'step4' -or $_ -match 'step9') } | Set-Content $outfile
}

#3

If you need to loop inside a directory recursively for a particular kind of file, use the below command, which filters all the files of doc file type

如果需要以递归方式为特定类型的文件循环内部目录，请使用以下命令，该命令将过滤doc文件类型的所有文件

$fileNames = Get-ChildItem -Path $scriptPath -Recurse -Include *.doc

$ fileNames = Get-ChildItem -Path $ scriptPath -Recurse -Include * .doc

If you need to do the filteration on multiple types, use the below command.

如果需要对多种类型进行过滤，请使用以下命令。

$fileNames = Get-ChildItem -Path $scriptPath -Recurse -Include *.doc,*.pdf

$ fileNames = Get-ChildItem -Path $ scriptPath -Recurse -Include * .doc，*。pdf

Now $fileNames variable act as an array from which you can loop and apply your business logic.

现在$ fileNames变量充当一个数组，您可以从中循环并应用业务逻辑。

#4

Other answers are great, I just want to add... a different approach usable in PowerShell: Install GNUWin32 utils and use grep to view the lines / redirect the output to file http://gnuwin32.sourceforge.net/

其他答案很棒，我只想添加... PowerShell中可用的不同方法：安装GNUWin32 utils并使用grep查看行/将输出重定向到文件http://gnuwin32.sourceforge.net/

This overwrites the new file every time:

这会每次都覆盖新文件：

grep "step[49]" logIn.log > logOut.log

This appends the log output, in case you overwrite the logIn file and want to keep the data:

这会附加日志输出，以防您覆盖logIn文件并希望保留数据：

grep "step[49]" logIn.log >> logOut.log

Note: to be able to use GNUWin32 utils globally you have to add the bin folder to your system path.

注意：为了能够全局使用GNUWin32 utils，您必须将bin文件夹添加到系统路径中。

#1

250