@if(0)==(0) echo off
dir /b /a-d /s *.txt | cscript //nologo //e:jscript "%~f0"
pause & goto :EOF
@end

var fso = new ActiveXObject('Scripting.FileSystemObject');
var reg = /^.*(\d{4})([-/])(\d{1,2})\2(\d{1,2})/gm;

var checkValidDate = function(s0, s1, s2, s3, s4){
    var dt = new Date(s1, s3 - 1, s4);
    return (dt.getFullYear() == s1 && (dt.getMonth() + 1) == s3 && dt.getDate() == s4) ? '￥' + s0 : s0;
}

while(!WSH.StdIn.AtEndOfStream){
    var strFile = WSH.StdIn.ReadLine();
    var objFile = fso.OpenTextFile(strFile, 1);
    var str = objFile.ReadAll().replace(reg, checkValidDate);
    objFile.Close();
    fso.OpenTextFile(strFile, 2).Write(str);
}
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