write(x, file = "data", ncolumns = <<see below>>, append = FALSE, 
    sep = " ")
| x | a vector. Missing values (NAs) are allowed. | 
| file | a character string naming the file where you want to write the data. On Windows, if file is "clipboard" the data are written to the Windows clipboard instead of to a file. | 
| ncolumns | the number of data items to put on each line of file. The default is 5 per line for numeric data, and 1 per line for character data. | 
| append | a logical value. If FALSE (the default), creates the file or overwrites the contents of the specified existing file. If TRUE, appends the data to any contents extant in file. | 
| sep | the separator to use between data items. The default is a space: " ". | 
filex <- tempfile("filex")
x <- runif(8)
write(round(x, 3), filex)
# write matrix row by row 
x.byrows <- tempfile("x.byrows")
x <- matrix(1:12,4)
write(t(x), file=x.byrows, ncolumns=ncol(x)) 
unlink(c(filex, x.byrows))  # clean up