heisei.cmd
set ymd=%DATE:/=% && set /a yymmdd=%ymd%-19880000 > nul && echo 平成%yymmdd:~0,2%年%yymmdd:~2,2%月
↓
平成29年07月
More than 5 years have passed since last update.
set ymd=%DATE:/=% && set /a yymmdd=%ymd%-19880000 > nul && echo 平成%yymmdd:~0,2%年%yymmdd:~2,2%月
↓
平成29年07月
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