read a single pushed key by a dash script

[Ralf Mardorf]

Maybe I'll use something like this:

ubuntu-mate at ubuntu-mate:~$ cat /tmp/test.sh 
#!/bin/dash

# http://stackoverflow.com/questions/8725925/how-to-read-just-a-single-character-in-shell-script

read_p_n() {
  printf "$1"
  stty -icanon -echo
  eval "$3=\$(dd bs=1 count=$2 2>/dev/null)"
  stty icanon echo
  echo
}

read_p_n "yes or no? " 1 answer
read_p_n "hello "      5 reply

printf "\n$answer $reply\n"

exit

But perhaps I stay with 'bash -c'.

Regards,
Ralf