I am writing an R script where I need to download a file, save it in a folder while keeping the original filename from the website.

```
url <- http://www.seg-social.es/prdi00/idcplg?IdcService=GET_FILE&dID=187112&dDocName=197533&allowInterrupt=1
```

From a web browser, if you click on that link, you get to download an excel file with this filename:

AfiliadosMuni-02-2015.xlsx

I know I can easily download it with the commmand download.file in R like this:

```
download.file(url, "test.xlsx", method="curl")
```

But what I really need for my script is to download it keeping the original filename intact. I also know I can do this with curl from my console like this.

```
curl -O -J $"http://www.seg-social.es/prdi00/idcplg?IdcService=GET_FILE&dID=187112&dDocName=197533&allowInterrupt=1"
```

But, again, I need this within an R script. Is there a way similar to the one above but in R? I have looked into the RCurl package but I couldn´t find a solution.

Thanks.

Answer:

You could always do something like:

```
library(httr)
library(stringr)
# alternate way to "download.file"
fil <- GET("http://www.seg-social.es/prdi00/idcplg?IdcService=GET_FILE&dID=187112&dDocName=197533&allowInterrupt=1",
write_disk("tmp.fil"))
# get what name the site suggests it shld be
fname <- str_match(headers(fil)$`content-disposition`, "\"(.*)\"")[2]
# rename
file.rename("tmp.fil", fname)
```

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