you can use ; , and . as a space
for,/f;"tokens=1*";%a;in;('dir /a'),do;echo.%a
you can load an image from cmd in full screen preview
rundll32.exe %SystemRoot%\system32\shimgvw.dll,ImageView_Fullscreen c:\file.bmp
reg add HKCR\cmdfile\shell\open\command /ve /t REG_SZ /d "'%1 %*'"
in cmd\shell\open\command, you can also make it run a specific file when any .cmd file is clicked C:\file.cmd "%1" %*
echo CreateObject("Wscript.Shell").Run """" ^& WScript.Arguments(0) ^& """", 0, False>a.vbs
wscript.exe a.vbs file.bat
that will make a .bat file run invisible