@echo off
chcp 65001
set _".html"=0
set _".shtml"=0
for /f "delims=" %%i in (test.txt) do (
    for %%j in (%%i) do (
        if defined _"%%~xj" echo,%%~j
    )
)
pause
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@echo off &setlocal enabledelayedexpansion
chcp 65001>nul
cd.>test.new
for /f tokens^=6^delims^=^=^" %%v in (test.txt) do (
	find "%%~v" test.new>nul || echo,%%v>>test.new
)
type test.new
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@echo off
PowerShell "$s = (gc test.txt) -join ''; [regex]::Matches($s, 'https?://(?:(?!\x22|https?://).)+\.s?html(?=\x22)') | forEach {$_.Value} | sort -Unique | sc xxx.txt"
pause
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@echo off
PowerShell "$s = (gc test.txt) -join ''; [regex]::Matches($s, 'https?://(?:(?!\x22|https?://).)+\.s?html(?=\x22)') | forEach {$_.Value + \"`r`n\"} | sort -Unique | sc xxx.txt"
echo;Done
pause > nul
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