[文本处理] [已解决]求UTF-8文件添加BOM头的批处理脚本

powershell "[System.IO.File]::WriteAllBytes(目标文件,[byte[]](239,187,191)+[System.IO.File]::ReadAllBytes(源文件))"
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@echo off
set "filepath=e:\test\[1-9].txt"
Powershell -NoProfile -Command "Get-ChildItem -Path \"%filepath%\"|ForEach-object {$arr = Get-Content -ReadCount 0 -Path $_ -Encoding utf8 ; Set-Content -Value $arr -Path $_ -Encoding utf8}"
pause
exit /b
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@echo off
set "filepath=e:\test\[1-9].txt"
Powershell -NoProfile -Command "Get-ChildItem -Path \"%filepath%\" | ForEach-object { [System.IO.File]::WriteAllText($_.FullName, [System.IO.File]::ReadAllText($_.FullName, [System.Text.UTF8Encoding]::UTF8), (New-Object System.Text.UTF8Encoding -ArgumentList $true)) }"
pause
exit /b
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@echo off
set "filepath=C:\Users\*.txt"
REM srcEncoding=UTF8 or Default
set srcEncoding=Default
Powershell -NoProfile -Command "$srcEncoding=[System.Text.Encoding]::%srcEncoding%;$utf8bom=New-Object System.Text.UTF8Encoding -ArgumentList $true;Get-ChildItem -Path \"%filepath%\" | ForEach-Object { [System.IO.File]::WriteAllText($_.FullName, [System.IO.File]::ReadAllText($_.FullName, $srcEncoding), $utf8bom) }"
pause
exit /b
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@echo off
cd /d "%~dp0"
set "OldFile=1.txt"
set "NewFile=2.txt"
>"%temp%\BOM.tmp" echo 77u/
certutil -decode -f "%temp%\BOM.tmp" "%NewFile%" >nul
>>"%NewFile%" type "%OldFile%"
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@echo off
cd /d "%~dp0"
set "OldFile=1.txt"
set "NewFile=2.txt"
powershell "[System.IO.File]::WriteAllBytes('%NewFile%',[byte[]](239,187,191)+[System.IO.File]::ReadAllBytes('%OldFile%'))"
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@echo off
cd /d "%~dp0"
set "OldFile=1.txt"
set "NewFile=2.txt"
sed.exe "1s/^/\xEF\xBB\xBF/" "%OldFile%" > "%NewFile%"
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