powershell -c "([console]::readkey($true)).KeyChar"
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@echo off
choice /c abc /n /cs
if        errorlevel 3 (echo 输入为 c
 )else if errorlevel 2 (echo 输入为 b
 )else if errorlevel 1 echo 输入为 a
pause
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@echo off
echo,, P_0E30E50E75!!5!)-!TL-!>getch.com
getch.com
echo The char is ^%=ExitCodeAscii%
pause
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sc|findstr /x .
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sc|findstr /v $
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echo exit|cmd /k prompt e100 b4 01 cd 21 c3$_n getch.com$_rcx$_5$_w$_q|debug>nul
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for /f %%i in ('getch.com') do set "input=%%i"
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for /f "delims=" %%a in ('sc^|findstr /x .') do echo  您输入的是 %%a
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for /f "delims=" %%a in ('sc^|findstr /x ￥') do echo  您输入的是 %%a
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int 16h
ret
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