[R] Alter a line in a file.

[jim holtman]

try this:

a <- readLines(textConnection('setting1="value1"
setting2="value2"
setting3="value3"
setting4="value4"'))
closeAllConnections()
# change  values
ac <- sub('setting4="value4"', 'setting4="value5"', a)
writeLines(ac, con='myFile.txt')


On Thu, May 5, 2011 at 8:16 AM, Joel <joda2457 at student.uu.se> wrote:
> Hi all R users
>
> Ive got a file that contains diffrent settings in the manor of:
>
> setting1="value1"
> setting2="value2"
> setting3="value3"
> setting4="value4"
> .
> .
> .
>
> What I want to do is open the file and change the value of a specific
> setting
> like wanna change setting4="value4" -> setting4="value5" and then save the
> file again.
>
> setting1="value1"
> setting2="value2"
> setting3="value3"
> setting4="value5"
> .
> .
> .
>
>
>
>
> --
> View this message in context: http://r.789695.n4.nabble.com/Alter-a-line-in-a-file-tp3498187p3498187.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> 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.
>



-- 
Jim Holtman
Data Munger Guru

What is the problem that you are trying to solve?