Find files on Windows modified after a given date using the command line

Question

I need to search a file on my disk modified after a given date using the command line.

For example:

   dir /S /B WHERE modified date > 12/07/2013
         


        

Answer 1

I had a similar challenge. I used forfiles, however I noticed that it gave >= rather than just >. The input date was a variable, and so I didn't want to go through a bunch of hoops/loops to calculate date + 1 day (think about logic for last day of month or last day of year).

I created a function that ran forfiles for a particular date. That gives us all files with a modification date that is >= _date_. And for each file I check if the modification date is _date_, and print the output to a file if and only if it is not equal. That means the output file only has entries for files that are > _date_.

I can then check for existence of the output file to determine if any files in the current directory are greater than the input date. Moreover, if I wanted to know which files are newer, I can view the contents of the output file.

Finally, my input was parsed from a file that used a date format of MM/DD/YYYY, meaning it would be 07/01/2019 for July first. However, the date from FORFILES does not use leading zeros so I need to translate by dropping leading zeros.

My first attempt was to use /A thinking it drops the leading zeros. It doesn't it reads the value as octal -- don't repeat the mistake of my first attempt. So I just created a little helper function :getNum that drops leading zeros.

:: ########################################################################
:: :findNewerFiles
::
::     Windowsfile interface will only tell you if a file is
::     greater than OR EQUAL to the current date. Had to figure a way
::     to get just greater than.
::
::     Use 'forfiles' to find all files that are >= the specific date, and for
::     each file if the files date is not equal to the specific date then echo
::     the file information into the new-file-log.
::
::     If the new-file-log exists after we're all done, then it means there is
::     at least one file newer than the specified date.
::
:: PARMS:
::
::     %1 - MONTH
::
::     %2 - DAY
::
::     %3 - YEAR
::
:: ERRORLEVEL:
::     0  if no newer files found
::     !0 if a newer file was found
::
:findNewerFiles
SETLOCAL
    CALL :getNum M "%~1"
    CALL :getNum D "%~2"
    CALL :getNum Y "%~3"


    SET "RETVAL=1"

    %bu.callecho% PUSHD %G[3PROOT_UNC]%

    ECHO Last build date was: %M%/%D%/%Y%
    del "%G[NEW_FILE_LOG]%" >nul 2>&1

    FORFILES /p .\ /S /D +%M%/%D%/%Y% ^
             /c "cmd /c if /I @ISDIR == false if not @fdate==%M%/%D%/%Y% echo @fdate @path>>%G[NEW_FILE_LOG]%"

    IF EXIST "%G[NEW_FILE_LOG]%" (
        SET "RETVAL=0"
        TYPE "%G[NEW_FILE_LOG]%"
    )

    %bu.callecho% POPD
(ENDLOCAL
 EXIT /B %RETVAL%)





:: ########################################################################
:: :getNum
::
::     Remove leading 0 from input number and place results in output variable
::
:: PARMS:
::
::     %1 - OUTPUT VARIABLE
::          Name of the output variable to be populated
::
::     %2 - INPUT VARIABLE
::          The number to have leading zeros trimmed from
::
:: ERRORLEVEL:
::     0  always
::
:getNum
SETLOCAL
    SET "D=%~1"
    SET "M=%~2"

    IF "%M:~0,1%" EQU "0" (
        SET "M=%M:~1%"
    )

(ENDLOCAL
 SET "%D%=%M%"
 EXIT /B 0)