循环浏览目录并使用Powershell删除csv标头

Question

I'm trying to loop through the directory DirIn, remove the first two lines from each csv file, and then save those files in a new directory DirOut. The following code is what I've pieced together from other forums, but I cannot get the code to work. Any help would be greatly appreciated.

gci "DirIn\*.csv" | % {(gc $_ | select -Skip 2) | sc "DirOut\$_" }

Answer 1

You're losing your $_ reference to the file when piping inside the ForEach-Object loop. Use the -PipelineVariable parameter to get around that.

gci "DirIn\*.csv" -PipelineVariable 'File' | % {(gc $File | select -Skip 2) | sc "DirOut\$($File.Name)" }

Answer 2

To show LotPings answer in a readable and maintainable format...

ForEach ($File in (Get-ChildItem "DirIn\*.csv")) {
    (Get-Content $File | Select-Object -Skip 2) |
        Set-Content "DirOut\$($File.Name)"
}

Best practice is to not use aliases in script files.

Answer 3

gci "DirIn\*.csv" | % {(gc $_ | select -Skip 2) | sc "DirOut\$($_.Name)" }