How to check by date +1 day when deleting old files?

Question

cmd/bat

There is a command to delete files older than 3 days
"FORFILES /p F:\backup\ /s /m *.* /d -3 /c "CMD /c del /Q @FILE""
I just don't understand the logic, so as a programmer, I’m no good, because I’m just an enikey, but how can I make the command delete files after checking that there are fresh files, and if there are no fresh files, then the script is not executed?

Answer 1

Bohdan Zadorozhniy you need to run a similar command to find out if there were fresh
FORFILES /p files. /s /m *.* /d !"today minus 3 days"! /c "cmd /c echo @FILE"
IF errorlevel 1 ECHO Skip Purge && GOTO :EOF
...
and to do this calculate the
date "today minus 3 days"
- this is traditionally done through some better language than cmd
e.g. jscsipt
example - if helped - mark as solution
check.cmd

@echo OFF
REM https://qna.habr.com/q/898855
SETLOCAL ENABLEDELAYEDEXPANSION
SET delta=%1
IF "%delta%"=="" SET delta=-3
FOR /f %%. IN ('cscript.exe /nologo add_days.js !delta!') DO SET CHECK_DATE=%%.
ECHO FORFILES /p . /s /m *.* /d !CHECK_DATE! /c "cmd /c echo @FILE"
FORFILES /p . /s /m *.* /d !CHECK_DATE! /c "cmd /c echo @FILE" 2>NUL 1>NUL
IF errorlevel 1 ECHO Skip Purge && GOTO :EOF
echo Call purge

GOTO :EOF

add_date.js

var days=parseInt(WScript.Arguments.Item(0));

Date.prototype.addDays = function(days) { var date = new Date(this.valueOf()); date.setDate(date.getDate() + days); return date; }

var o = (new Date()).addDays(days);

WScript.Echo((1 + o.getMonth()) + '/' + o.getDate() + '/' + o.getFullYear());