[R] Appending strings at the beginning of a text file

[Paul Smith]

Thanks, Henrique.

I think you mean the following:

fConn <- file('test.txt', 'r+')
Lines <- readLines(fConn)
writeLines(c("Text at beginning of file\n", Lines), con = fConn)
close(fConn)

(With paste(), it does not work.)

Paul

On Tue, Aug 25, 2009 at 5:02 PM, Henrique Dallazuanna<wwwhsd at gmail.com> wrote:
> Try this;
>
> fConn <- file('test.txt', 'r+')
> Lines <- readLines(fConn)
> writeLines(paste("Text at beginning of file", Lines, sep = "\n"),
>            con = fConn)
>
> On Tue, Aug 25, 2009 at 12:54 PM, Paul Smith <phhs80 at gmail.com> wrote:
>>
>> Dear All,
>>
>> I have a piece of text that I want to append to a text file at the
>> beginning of the text file.
>>
>> I have thought about using cat() with the option 'append=T', but the
>> appending, in this case, is done at the bottom of the text file. Any
>> ideas?
>>
>> Thanks in advance,
>>
>> Paul
>>
>> ______________________________________________
>> 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.
>
>
>
> --
> Henrique Dallazuanna
> Curitiba-Paraná-Brasil
> 25° 25' 40" S 49° 16' 22" O
>