qixiaobin0715

for /f "delims=" %%i in ('dir /b /a-d "*%str%*.*"') do (
    set "Filename=%%i"
    set "Filename=!Filename:%str%=`!"
    for /f "delims=`" %%j in ("!Filename!") do ren "%%i" "%%j%%~xi"
)
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