
CODE: [Copy to clipboard]@Echo off&Setlocal EnableDelayedExpansion
for /F "delims=: tokens=1*" %%a in (a.txt) do (
if defined %%b set _%%b=!_%%b!=%%a
if not defined %%b set %%b=batch&set _%%b=%%a
)
(for /F "delims== tokens=1*" %%b in ('set _') do @echo\%%c)|findstr =
pause
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