Standard input, output, error flow in the R language

In R, stdin () corresponds to the standard input stream, stdout () corresponds to the standard output stream, and stderr () corresponds to the standard error stream

1) reading data from the standard input stream

In the interactive environment of R,

R>a <- read.table (stdin ())0: a1: b2: C

Press CTRL + D to end the input, but this seems to be useful only in interactive environments, where test runs are unsuccessful in Rscript;

2) Print information to standard output stream

Write ("I am stdout", stdout ())

Useful when you want to print information to standard output

3) Print error message to standard error stream

Write ("I am stderr", stderr ())

This is useful for printing error messages during the run

Standard input, output, error flow in the R language