[R] ftp connections for uploading files

[Duncan Temple Lang]

Prof Brian Ripley wrote:
> Try system() with curl or a decent ftp client (I don't see that package 
> RCurl covers this, but it might despite its description only mentioning 
> HTTP).

It does support FTP, and all of the protocols that are supported in
the installed libcurl, so it depends the configuration options for 
libcurl itself.

The protocols it handles can be found via the curlVersion() function, e.g.

 > curlVersion()
$age
[1] 3

$version
[1] "7.16.3"

$vesion_num
[1] 462851

$host
[1] "powerpc-apple-darwin9.0"

$features
         ipv6          ssl         libz         ntlm gssnegotiate 
largefile
            1            4            8           16           32 
    512

$ssl_version
[1] " OpenSSL/0.9.7l"

$ssl_version_num
[1] 0

$libz_version
[1] "1.2.3"

$protocols
[1] "tftp"   "ftp"    "telnet" "dict"   "ldap"   "http"   "file"   "https"
[9] "ftps"

$ares
[1] ""

$ares_num
[1] 0

$libidn
[1] ""



sessionInfo()
R version 2.9.0 Under development (unstable) (2008-09-27 r46576)
i386-apple-darwin9.5.0

locale:
C

attached base packages:
[1] stats     graphics  grDevices datasets  utils     methods   base

other attached packages:
[1] ROOXML_0.1-0        Rcompression_0.4-0  RGoogleDocs_0.2-0
[4] SVGAnnotation_0.1-0 lattice_0.17-15     RCurl_0.92-0
[7] XML_1.99-0          RTools_0.1-0        bitops_1.0-4

loaded via a namespace (and not attached):
[1] grid_2.9.0
 >




 >  From 'man curl'
> 
>    curl offers a busload of useful tricks like proxy support, user authen-
>    tication,  ftp upload, HTTP post, SSL connections, cookies, file trans-
>    fer resume and more. As you will see below, the amount of features will
>    make your head spin!
> 
> Ftp protocols (and there are more than one) are fiendishly complicated, 
> especially if proxies are involved.
> 
> BTW, this is yet another case where knowing your OS would have helped 
> give a more precise answer. See the posting guide.
> 
> On Thu, 8 Jan 2009, Thomas Loridan wrote:
> 
>> Hi all,
>>
>> I would like to upload some plots I create wth R via ftp or something
>> similar but I don t really understand which command/syntax I should
>> use:
>> should I go for  make.socket + write.socket or try and create
>> environment variables like frp_proxy_user and then ftp my files? how?
>>
>> many thanks for your help
>>
>> Thomas
>>
>> -- 
>> Thomas Loridan
>> King's College email: thomas.loridan at kcl.ac.uk
>> webpage:http://geography.kcl.ac.uk/micromet/tloridan/index.htm
>>
>> ______________________________________________
>> R-help at r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide 
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>>
>