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T:\>findstr /n /r "^" f9.txt
1:1
2:2
3:3
4:
5:5
6:
7:7:5\;5:6
8:8
9:

T:\>for /f "usebackq tokens=1,* delims=:" %i in (`findstr /n /r "^" f9.txt`) Do @echo __%j__
__1__
__2__
__3__
____
__5__
____
__7:5\;5:6__
__8__
____

T:\>

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set __somevar=abc
set __anothervar=123

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set __var1=abc
set __var2=123

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for /f "usebackq tokens=1 delims==" %%x in (`set __`) do set "%%x="

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@echo off&setlocal

   for /d %%a in (*) do call :DEEPER "%%a"
goto :EOF


:DEEPER
   for /r %1 %%b in (*) do echo "%%b"  
goto :EOF

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findstr /v /i /c:"</menu>" "PC Games.xml" > temp.xml

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@echo off & setlocal

for %%x in ("%__CD__%") do set "ThisVolume=%%~dx"

(
   echo sel vol %ThisVolume%
   echo attr disk
) | diskpart | ( findstr /i "Read-only  : No" >nul && echo Disk is not protected!)