使用Powershell删除文件夹中多个csv文件中的空行

Question

Delete empty rows in Multiple CSV files in a Folder by using PowerShell

This is the code I am trying, But it is writing empty files. Not Sure What's wrong with this code. Any suggestions would be appreciated. thank you.

$dest= "C:\Test"
Get-ChildItem $dest *.csv | ForEach-Object {
Get-Content $_.FullName | Where { $_.Replace(",","").trim() -ne "" }  | Out-File $_.FullName
}

Answer 1

This behavior is expected, Get-Content and Out-File should not be sharing the same pipeline if reading and writing to the same file. Either, surround Get-Content with brackets or store the content in a variable and then write the file.

$dest = "C:\Test"
Get-ChildItem $dest *.csv | ForEach-Object {
    (Get-Content $_.FullName) | Where { $_.Replace(",","").trim() -ne "" } |
    Out-File $_.FullName
}

# OR

$dest = "C:\Test"
Get-ChildItem $dest *.csv | ForEach-Object {
    (Get-Content $_.FullName | Where { $_.Replace(",","").trim() -ne "" }) |
    Out-File $_.FullName
}

# OR

$dest = "C:\Test"
Get-ChildItem $dest *.csv | ForEach-Object {
    $content = Get-Content $_.FullName | Where { $_.Replace(",","").trim() -ne "" }
    Out-File -InputObject $content -FilePath $_.FullName
}