From: Michael Kircher <Michael.Kircher@...>
Date: 2002-04-23T05:33:47+09:00
Subject: Re: Modified date due to File.copy


Hi Ned

Thanks for the reply. Are you sure it works on Win XP?

I get the error:  in `utime': Invalid argument - "foo.pdf"(Errno::EINVAL)
even though the file exists and is not protected by any means.

Thanks,
Michael

Ned Konz wrote:

> Michael Kircher wrote:
>
> > I am developing an application where I have to rely on the
> > date of files. If I do copy files, I expect to have the "last modified
> > date" to stay the same on the copy.
>
> > Is there any way to avoid this? The call to system ("copy", ...)
> > did not succeed but returned false - is that supposed to work?
>
> $ ri utime
> ------------------------------------------------------------ File::utime
>      File.utime( anAccessTime, aModTime [, fileName]+> ) -> aFixnum
> ------------------------------------------------------------------------
>      Changes the access and modification times on a number of files. The
>      times must be instances of class Time or integers representing the
>      number of seconds since epoch. Returns the number of files
>      processed. Not available on all platforms.
>         File.utime(0, 0, "testfile")          #=> 1
>         File.mtime("testfile")                #=> Wed Dec 31 18:00:00 CST
> 1969
>         File.utime(0, Time.now, "testfile")   #=> 1
>         File.mtime("testfile")                #=> Sun Mar 04 23:28:25 CST
> 2001