[R] Determining which file is newer

Henrik Bengtsson hb at stat.berkeley.edu
Fri Oct 23 18:11:28 CEST 2009


Have a look at your company name and your phone number.  Nudge nudge,
wink wink, say no more... /H

On Fri, Oct 23, 2009 at 9:02 AM, Dennis Fisher <fisher at plessthan.com> wrote:
> Colleagues,
>
> I wish to execute a task only if a particular file is newer than a second
> file.  I can access the file modification dates using file.info()$mtime.
> This yields a time object (? POSIX).
>                        size    isdir   mode    mtime
>           ctime
>        Testfile        4421    FALSE   755     2009-10-23 08:59:09
>   2009-10-23 08:59:09
> What is the simplest means to compare these two objects?
>
> R2.9.1 in OSX, Windows, Linux
>
> Dennis
>
> Dennis Fisher MD
> P < (The "P Less Than" Company)
> Phone: 1-866-PLessThan (1-866-753-7784)
> Fax: 1-866-PLessThan (1-866-753-7784)
> www.PLessThan.com
>
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> and provide commented, minimal, self-contained, reproducible code.
>




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