Dear all, I would like to draw you attention to this question on SO: https://stackoverflow.com/questions/50372043/readlines-function-with-new-version-of-r
Based on the OP's code I used the script ####################################### create_matrix <- function() { cat("Write the numbers of vertices: ") user_input <- readLines("stdin", n=1) user_input <- as.numeric(user_input) print(user_input) } create_matrix() ####################################### and called it with "R -f ..." from the command line. With 'R version 3.4.4 (2018-03-15) -- "Someone to Lean On"' the script prints the inputed number as expected. With both 'R version 3.5.0 (2018-04-23) -- "Joy in Playing"' and 'R Under development (unstable) (2018-05-19 r74746) -- "Unsuffered Consequences"' the script does not continue after inputing a number. All these tests where done using docker images from the rocker project, i.e. effectively using Debian Linux. Is this an error in the script or in R? Thanks Ralf -- Ralf Stubner Senior Software Engineer / Trainer daqana GmbH Dortustraße 48 14467 Potsdam T: +49 331 23 61 93 11 F: +49 331 23 61 93 90 M: +49 162 20 91 196 Mail: ralf.stub...@daqana.com Sitz: Potsdam Register: AG Potsdam HRB 27966 P Ust.-IdNr.: DE300072622 Geschäftsführer: Prof. Dr. Dr. Karl-Kuno Kunze ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel