ConvertTo-Csv输出没有引号

Question

我ConvertTo-Csv用来得到逗号分隔输出

 get-process | convertto-csv -NoTypeInformation -Delimiter ","

输出如下:

"__NounName","Name","Handles","VM","WS",".....

但是我想得到没有引号的输出,比如

__NounName,Name,Handles,VM,WS....

Answer 1

嗯，我的 Mac 上有 Powershell 7 preview 1，Export-Csv 有一个 -UseQuotes 选项，您可以将其设置为从不。:)

Answer 2

这是一种删除引号的方法

get-process | convertto-csv -NoTypeInformation -Delimiter "," | % {$_ -replace '"',''} 

但它有一个严重的缺点,如果其中一个项目包含"它将被删除!

Answer 3

我今天在一张桌子上工作并在我在记事本中预览 CSV 文件时考虑了这个问题，并决定看看其他人提出了什么。似乎很多人都使解决方案过于复杂。
这是从 PowerShell 中的 Export-Csv cmdlet 生成的 CSV 文件中删除引号的一种非常简单的方法。

使用以下数据创建 TEST.csv 文件。

“ID”、“姓名”、“州”
“5”、“斯蒂芬妮”、“亚利桑那”
“4”、“梅兰妮”、“俄勒冈”
“2”、“凯蒂”、“德克萨斯”
“8”、“史蒂夫” ","爱达荷州"
"9","多莉","田纳西州"

另存为：TEST.csv

将文件内容存储在 $Test 变量中
$Test = Get-Content .\TEST.csv

加载 $Test 变量以查看 get-content cmdlet 的结果
$Test

再次加载 $Test 变量并用逗号替换所有 ( "," )，然后通过删除每个引号来修剪开始和结束

$Test.Replace('","',",").TrimStart('"').TrimEnd('"')

保存/替换 TEST.csv 文件

$Test.Replace('","',",").TrimStart('"').TrimEnd('"') | Out-File .\TEST.csv -Force -Confirm:$false

使用 Import-Csv 和 Get-Content 测试新文件输出：

Import-Csv .\TEST.csv
Get-Content .\TEST.csv

总而言之，这项工作可以用 2 行代码完成

$Test = Get-Content .\TEST.csv
$Test.Replace('","',",").TrimStart('"').TrimEnd('"') | Out-File .\TEST.csv -Force -Confirm:$false

Answer 4

这与接受的答案非常相似，但它有助于防止不必要地删除“真实”引号。

$delimiter = ','
Get-Process | ConvertTo-Csv -Delimiter $delimiter -NoTypeInformation | foreach { $_ -replace '^"','' -replace "`"$delimiter`"",$delimiter -replace '"$','' }

这将执行以下操作：

• 删除开始一行的引号
• 删除结束一行的引号
• 用单独的分隔符替换包含分隔符的引号。

因此，唯一会出错的方法是，其中一个值实际上不仅包含引号，而且特别包含引号-分隔符-引号序列，希望这应该是非常罕见的。

Answer 5

我遇到了这个问题，发现了这个问题，但对答案并不满意，因为如果您使用的数据包含一个应该保持引用的分隔符，它们似乎都会受到影响。摆脱不需要的双引号是一件好事。

下面的解决方案似乎可以解决一般情况下的这个问题，以及所有会导致问题的变体。

我在别处找到了这个答案，从 PowerShell 创建的 CSV 中删除引号，并使用它为 SO 社区编写示例答案。

归因： 正则表达式的功劳，100% 归功于 Russ Loski。

函数中的代码，Remove-DoubleQuotesFromCsv

function Remove-DoubleQuotesFromCsv
{
    param (
        [Parameter(Mandatory=$true)]
        [string]
        $InputFile,

        [string]
        $OutputFile
    )

    if (-not $OutputFile)
    {
        $OutputFile = $InputFile
    }

    $inputCsv = Import-Csv $InputFile

    $quotedData = $inputCsv | ConvertTo-Csv -NoTypeInformation

    $outputCsv = $quotedData | % {$_ -replace  `
        '\G(?<start>^|,)(("(?<output>[^,"]*?)"(?=,|$))|(?<output>".*?(?<!")("")*?"(?=,|$)))' `
        ,'${start}${output}'}

    $outputCsv | Out-File $OutputFile -Encoding utf8 -Force
}

测试代码

$csvData = @"
id,string,notes,number
1,hello world.,classic,123
2,"a comma, is in here","test data 1",345
3,",a comma, is in here","test data 2",346
4,"a comma, is in here,","test data 3",347
5,"a comma, is in here,","test data 4`r`nwith a newline",347
6,hello world2.,classic,123
"@

$data = $csvData | ConvertFrom-Csv
"`r`n---- data ---"
$data

$quotedData = $data | ConvertTo-Csv -NoTypeInformation
"`r`n---- quotedData ---"
$quotedData

# this regular expression comes from:
# http://www.sqlmovers.com/removing-quotes-from-csv-created-by-powershell/
$fixedData = $quotedData | % {$_ -replace  `
  '\G(?<start>^|,)(("(?<output>[^,"\n]*?)"(?=,|$))|(?<output>".*?(?<!")("")*?"(?=,|$)))' `
  ,'${start}${output}'}
"`r`n---- fixedData ---"
$fixedData

$fixedData | Out-File e:\test.csv -Encoding ascii -Force
"`r`n---- e:\test.csv ---"
Get-Content e:\test.csv

测试输出

---- data ---

id string               notes                       number
-- ------               -----                       ------
1  hello world.         classic                     123   
2  a comma, is in here  test data 1                 345   
3  ,a comma, is in here test data 2                 346   
4  a comma, is in here, test data 3                 347   
5  a comma, is in here, test data 4...              347   
6  hello world2.        classic                     123   

---- quotedData ---
"id","string","notes","number"
"1","hello world.","classic","123"
"2","a comma, is in here","test data 1","345"
"3",",a comma, is in here","test data 2","346"
"4","a comma, is in here,","test data 3","347"
"5","a comma, is in here,","test data 4
with a newline","347"
"6","hello world2.","classic","123"

---- fixedData ---
id,string,notes,number
1,hello world.,classic,123
2,"a comma, is in here",test data 1,345
3,",a comma, is in here",test data 2,346
4,"a comma, is in here,",test data 3,347
5,"a comma, is in here,","test data 4
with a newline","347"
6,hello world2.,classic,123

---- e:\test.csv ---
id,string,notes,number
1,hello world.,classic,123
2,"a comma, is in here",test data 1,345
3,",a comma, is in here",test data 2,346
4,"a comma, is in here,",test data 3,347
5,"a comma, is in here,","test data 4
with a newline","347"
6,hello world2.,classic,123

Answer 6

生成文件后，您可以运行

set-content FILENAME.csv ((get-content FILENAME.csv) -replace '"')