Would this be ok (on Windows, use grep on UNIX): # line numbers of all lines conitaining R in the R README file setwd(R.home()) as.numeric(sub(":.*", "", system("findstr /n R README", intern = TRUE)))
On 11/3/05, Tuszynski, Jaroslaw W. <[EMAIL PROTECTED]> wrote: > Hi, > > I am looking for a way to search a file for position of some expression, > from within R. My current code: > > sha1Pos = gregexpr("<sha1>", readChar(filename, > file.info(filename)$size))[[1]] > > Works fine for small files, but text files I will be working with might get > up to Gb range, so I was trying to accomplish the same without loading the > whole file into R. > > I realize this is not what R is designed to do, but maybe there is some way > I am missing. > > Jarek Tuszynski > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html > ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html