#!/bin/bash

function F2 {
  echo "stdout A"
  # echo toto >>/tmp/toto
  >&2 echo "This is stderr"
  blabla
  exit 6
  grep titi toto
  $nope
  echo "stdout B"
  echo "stdout C"
  # command_not_found
}

function F1 {
  echo F1
  F2
}

function main {
  F1
}

. lib/utility.bash
echo start of useless
main
echo end of useless