#!/bin/ksh
  ( echo 'proces 0'
    i=1
    while [[ $i -le 10 ]]
    do
      echo $i; i=$((i+1)); sleep 1
    done
)|( echo 'proces 1'
    while true
    do
      read x || break
      echo "(1) $x"
    done
)|( echo 'proces 2'
    while true
    do
      read x || break
      echo "(2) $x"
    done
  )