[R] how to know if a file exists on a remote server?

[Baoqiang Cao]

Thanks Steven!
It is excellent code indeed!

On Tue, Nov 30, 2010 at 11:26 AM, steven mosher <moshersteven at gmail.com> wrote:
>  I would use RCurl.
>
>  if you have, for example, the url of an ftp site you can merely do a
> getURL() and the contents will be returned. That call will return data that
> can be coerced into a data.frame that will look like a directory structure
> listing the file names.
>
> If you need code just ask, but the RCurl docs are pretty good.
>
>
>
> On Tue, Nov 30, 2010 at 8:10 AM, Baoqiang Cao <bqcaomail at gmail.com> wrote:
>>
>> Hi,
>>
>> I'd like to download some data files from a remote server, the problem
>> here is that some of the files actually don't exist, which I don't
>> know before try. Just wondering if a function in R could tell me if a
>> file exists on a remote server? I searched this mailing list and after
>> read severals mails, still clueless.  Any help will be highly
>> appreciated.
>>
>> B.C.
>>
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>
>