How to Change File Dates

When a file is created on a computer, it is automatically given a set of attributes. These attributes include the date, size and file format. This process occurs on Windows and Mac OS X platforms. File dates occasionally must be changed to put them in some better order. This guide shows you how to change file attributes on Windows and OS X platforms.

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 Steps

Changing 'Date Modified' in Windows 7

   
    Set clock (bottom right of desktop) to the desired date/time
   
    Open file
   
    Save file as itself
   
    Close file
   
    Revert to normal time

Changing File Dates in Windows Vista

   
    Right-click on the file with the date you want to change. Access the Properties menu.
   
    Click on the "Custom" tab in the Properties menu.
   
    Select which type of date you want to change under the "Name" field.

Changing a File Date on a Mac using OS X

   
    Download a file editing application. There will be further directions with the software, but the basics are listed below.
   
    Launch "Terminal." You will find this in "Applications/Utilities."
   
    Key in the following command: "touch �t YYYYMMDDhhmm.ss" to start the process. The modification date needs "touch �mt�" as opposed to "touch �t�."
   
    Walk through the steps given, and add the year, month, day and time as requested.

Tips

    Simple changes to a user file happen when the file is resaved.
    There are third-party programs available to help with more detailed changes.

Warnings

    Find an expert if you feel uncomfortable changing the attributes of a file.