How can a file created date be in the past?












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I have an installation where some of the files that are put onto the file system have Created timestamps in the past. I understand that it is possible to use API calls to modify the Created (and other) timestamps. So it is possible the installation is doing this once the file has been copied.



Is this the only way a file's Created date can be in the past, or is there some other way that the Created date of the source file is preserved when copied to the file system?










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    1














    I have an installation where some of the files that are put onto the file system have Created timestamps in the past. I understand that it is possible to use API calls to modify the Created (and other) timestamps. So it is possible the installation is doing this once the file has been copied.



    Is this the only way a file's Created date can be in the past, or is there some other way that the Created date of the source file is preserved when copied to the file system?










    share|improve this question

























      1












      1








      1


      1





      I have an installation where some of the files that are put onto the file system have Created timestamps in the past. I understand that it is possible to use API calls to modify the Created (and other) timestamps. So it is possible the installation is doing this once the file has been copied.



      Is this the only way a file's Created date can be in the past, or is there some other way that the Created date of the source file is preserved when copied to the file system?










      share|improve this question













      I have an installation where some of the files that are put onto the file system have Created timestamps in the past. I understand that it is possible to use API calls to modify the Created (and other) timestamps. So it is possible the installation is doing this once the file has been copied.



      Is this the only way a file's Created date can be in the past, or is there some other way that the Created date of the source file is preserved when copied to the file system?







      windows filesystems ntfs timestamp






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      asked Dec 6 at 14:32









      fractor

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          The dates of a file, creation & modification, are preserved when moving a file,
          but not when copying it, as the copied file is regarded as new.



          Most compression programs, such as Zip, also keep the dates when zipping the
          files into the archive, and restore them when unzipping by using the same
          API calls as you found.



          As most installation jobs keep the files they install in some form of a compressed
          archive, the dates are kept when installing the files by uncompressing them.






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            1 Answer
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            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            2














            The dates of a file, creation & modification, are preserved when moving a file,
            but not when copying it, as the copied file is regarded as new.



            Most compression programs, such as Zip, also keep the dates when zipping the
            files into the archive, and restore them when unzipping by using the same
            API calls as you found.



            As most installation jobs keep the files they install in some form of a compressed
            archive, the dates are kept when installing the files by uncompressing them.






            share|improve this answer


























              2














              The dates of a file, creation & modification, are preserved when moving a file,
              but not when copying it, as the copied file is regarded as new.



              Most compression programs, such as Zip, also keep the dates when zipping the
              files into the archive, and restore them when unzipping by using the same
              API calls as you found.



              As most installation jobs keep the files they install in some form of a compressed
              archive, the dates are kept when installing the files by uncompressing them.






              share|improve this answer
























                2












                2








                2






                The dates of a file, creation & modification, are preserved when moving a file,
                but not when copying it, as the copied file is regarded as new.



                Most compression programs, such as Zip, also keep the dates when zipping the
                files into the archive, and restore them when unzipping by using the same
                API calls as you found.



                As most installation jobs keep the files they install in some form of a compressed
                archive, the dates are kept when installing the files by uncompressing them.






                share|improve this answer












                The dates of a file, creation & modification, are preserved when moving a file,
                but not when copying it, as the copied file is regarded as new.



                Most compression programs, such as Zip, also keep the dates when zipping the
                files into the archive, and restore them when unzipping by using the same
                API calls as you found.



                As most installation jobs keep the files they install in some form of a compressed
                archive, the dates are kept when installing the files by uncompressing them.







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Dec 6 at 15:12









                harrymc

                253k12259560




                253k12259560






























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