PowerShell5將index [0]設置為字符串的第一個實例，將index [1]設置為第二個實例，依此類推，直到在6800行Windows10批處理文件中完成

Question

Powershell5腳本使Windows 10批處理文件中的特殊字符阻塞，還是我的代碼從根本上錯了？

解析6800行Windows 10批處理文件，找到字符串{LINE2 1-9999}，並將{1-9999}替換為代碼所在的行號，重新編寫批處理文件。 {LINE2 1-9999}有54個實例。 如果我分析整個批處理，則輸出前54行，其中沒有一個包含字符串。

$lines = sls "LINE2" $env:windir\_61.bat | Select-Object -ExpandProperty LineNumber
gc $env:windir\_61.bat -OutVariable Content
$output = for ($index = 0; $index -lt $lines.count; $index++) {
$Content[$index] -replace "LINE2.*", "LINE2 $($lines[$index])"
} 
$output | sc "$env:TEMP\somebadhat.bat"

如果_61.bat是：

TITLE %TIME%   NO "%zmyapps1%\*.*" ARCHIVE ATTRIBUTE   LINE2 1243 
TITLE %TIME%   DOC/SET YQJ8   LINE2 1887 
SET ztitle=%TIME%: WINFOLD   LINE2 2557 
TITLE %TIME%   _*.* IN WINFOLD   LINE2 2597 
TITLE %TIME%   %%ZDATE1%% YQJ25   LINE2 3672 
TITLE %TIME%   FINISHED. PRESS ANY KEY TO SHUTDOWN ... LINE2 4922 

結果：

TITLE %TIME%   NO "%zmyapps1%\*.*" ARCHIVE ATTRIBUTE   LINE2 1
TITLE %TIME%   DOC/SET YQJ8   LINE2 2
SET ztitle=%TIME%: WINFOLD   LINE2 3
TITLE %TIME%   _*.* IN WINFOLD   LINE2 4
TITLE %TIME%   %%ZDATE1%% YQJ25   LINE2 5
TITLE %TIME%   FINISHED. PRESS ANY KEY TO SHUTDOWN ... LINE2 6 

如果_61.bat是：

TITLE %TIME%   NO "%zmyapps1%\*.*" ARCHIVE ATTRIBUTE   LINE2 1243
TITLE %TIME%   DOC/SET YQJ8   LINE2 1887
SET ztitle=%TIME%: WINFOLD   LINE2 2557
TITLE %TIME%   _*.* IN WINFOLD   LINE2 2597
TITLE %TIME%   %%ZDATE1%% YQJ25   LINE2 3672
TITLE %TIME%   FINISHED. PRESS ANY KEY TO SHUTDOWN ... LINE2 4922
:: Microsoft Windows [Version 10.0.17134.345] 64-BIT
@ECHO OFF 
TITLE %TIME%   FINISHED. PRESS ANY KEY TO SHUTDOWN ... LINE2 4923

結果：

TITLE %TIME%   NO "%zmyapps1%\*.*" ARCHIVE ATTRIBUTE   LINE2 1
TITLE %TIME%   DOC/SET YQJ8   LINE2 2
SET ztitle=%TIME%: WINFOLD   LINE2 3
TITLE %TIME%   _*.* IN WINFOLD   LINE2 4
TITLE %TIME%   %%ZDATE1%% YQJ25   LINE2 5
TITLE %TIME%   FINISHED. PRESS ANY KEY TO SHUTDOWN ... LINE2 6
:: Microsoft Windows [Version 10.0.17134.345] 64-BIT
@ECHO OFF

---

TITLE %TIME%   FINISHED. PRESS ANY KEY TO SHUTDOWN ... LINE2 4923

不見了。

@有30個實例。 例如：

SET p= & title NetFix v1.0a by Giovanni Heward (g@utahjrs.com) complete!
%PROGRAMFILES%\7-Zip\7z.exe" u -t7z -x@"%WINDIR%\_exclude7z.txt"

那是問題所在嗎？ 我用什么代替它？ 為什么，如果我解析整個文件，該文件具有該字符串的54個實例，它將輸出54行，而其中的任何一行都不包含該字符串？ 我的代碼有根本上的錯誤嗎？

Answer 1

您的腳本只會解析輸入腳本中包含“ LINE2 nnnn”標記的行數。 因此，在上面的第二個輸入示例中，在9行輸入中，只有7行包含“ LINE2 nnnn”，因此僅處理了前7行。 原因是這樣的：

$lines = sls "LINE2" c:\temp\_61.bat | Select-Object -ExpandProperty LineNumber

該行包含所有包含匹配文本的$lines的數組，因此$lines是7個整數的數組。 在后面的for循環中，您僅迭代了許多項：

$output = for ($index = 0; $index -lt $lines.count; $index++) {

您實際上並不需要$lines數組，只需在內容上使用循環索引來確定行號：

gc $env:windir\_61.bat -OutVariable Content 
$output = for ($index = 0; $index -lt $Content.count; $index++) {
$Content[$index] -replace "LINE2.*", "LINE2 $($index)"
} 
$output | sc "$env:TEMP\somebadhat.bat"

請注意，您可以通過刪除臨時變量，通過管道推送所有數據來稍微清理一下腳本：

gc $env:windir\_61.bat | foreach -begin {$lc = 1} -process {
    $_ -replace "LINE2 \d*", "LINE2 $lc";
    $lc += 1
} | out-file "$env:TEMP\somebadhat.bat"

Answer 2

只是為了可視化Select-String返回什么以及如何替換基於索引的文件內容中的行號（zdan的方法效率更高）

## Q:\Test\2019\02\15\SO_54712715.ps1
$FilePath = '.\_61v2.bat'
$FileContent = Get-Content $FilePath
$FileMatches = Select-String -Path $FilePath -Pattern '(?<=LINE2 )\d+\s?$'

ForEach ($FM in $FileMatches){
   "{0}:{1} [{2}=>{0}]" -f $FM.LineNumber,$FM.Line,$FM.Matches.Value
   $FileContent[$FM.LineNumber-1] = $FM.Line.Replace($FM.Matches.Value,$FM.LineNumber)
}
$FileContent | Set-Content $FilePath

樣本輸出：

> Q:\Test\2019\02\15\SO_54712715.ps1
1:TITLE %TIME%   NO "%zmyapps1%\*.*" ARCHIVE ATTRIBUTE   LINE2 1243 [1243=>1]
2:TITLE %TIME%   DOC/SET YQJ8   LINE2 1887 [1887=>2]
3:SET ztitle=%TIME%: WINFOLD   LINE2 2557 [2557=>3]
4:TITLE %TIME%   _*.* IN WINFOLD   LINE2 2597 [2597=>4]
5:TITLE %TIME%   %%ZDATE1%% YQJ25   LINE2 3672 [3672=>5]
6:TITLE %TIME%   FINISHED. PRESS ANY KEY TO SHUTDOWN ... LINE2 4922 [4922=>6]
9:TITLE %TIME%   FINISHED. PRESS ANY KEY TO SHUTDOWN ... LINE2 4923 [4923=>9]

和生成的文件內容（上述bat的版本2）

> gc .\_61v2.bat
TITLE %TIME%   NO "%zmyapps1%\*.*" ARCHIVE ATTRIBUTE   LINE2 1
TITLE %TIME%   DOC/SET YQJ8   LINE2 2
SET ztitle=%TIME%: WINFOLD   LINE2 3
TITLE %TIME%   _*.* IN WINFOLD   LINE2 4
TITLE %TIME%   %%ZDATE1%% YQJ25   LINE2 5
TITLE %TIME%   FINISHED. PRESS ANY KEY TO SHUTDOWN ... LINE2 6
:: Microsoft Windows [Version 10.0.17134.345] 64-BIT
@ECHO OFF
TITLE %TIME%   FINISHED. PRESS ANY KEY TO SHUTDOWN ... LINE2 9