##-
# Author: Brian Tiffin
# Dedicated to the public domain
#
# Date: October 2016
# Modified: 2016-10-09/01:59-0400
##+
#
# fcntl.icn, demonstrate the POSIX fcntl function
#
link ximage
procedure main()
    f := open(&file, "r") | stop("Cannot open " || &file)
    every cmd := "f" | "x" | "o" do
        write(image(fcntl(f, cmd, 0)))
    write(ximage(fcntl(f, "l", "r,0,0")))
    close(f)
end