Create unique file name Windows batch

Question

I have seen many posts about creating a unique filename from the naive %TIME% to the plausible (but insufficient) %RANDOM%. Using wmic os get localdatetime is m

Answer 1

The Batch-JScript hybrid script below uses WSH's fso.GetTempName() method that was designed precisely for this purpose:

@if (@CodeSection == @Batch) @then

@echo off

for /F "delims=" %%a in ('cscript //nologo //E:JScript "%~F0"') do set "fileName=%%a"
echo Created file: "%fileName%"
goto :EOF

@end

var fso = new ActiveXObject("Scripting.FileSystemObject"), fileName;
do { fileName = fso.GetTempName(); } while ( fso.FileExists(fileName) );
fso.CreateTextFile(fileName).Close();
WScript.Echo(fileName);