# File lib/session.rb, line 454
    def send_command cmd
      stdin.printf "%s '%s' 1>&2\n", ECHO, cmd.begin_err
      stdin.printf "%s '%s' \n", ECHO, cmd.begin_out
 
      stdin.printf "%s\n", cmd.cmd
      stdin.printf "export __exit_status__=$?\n"

      stdin.printf "%s '%s' 1>&2\n", ECHO, cmd.end_err
      stdin.printf "%s '%s' \n", ECHO, cmd.end_out
 
      stdin.flush
    end