replace sudo by justdoit and give you a motivational speech when stdout/stderr

justdoit

#!/bin/bash

declare -a keepTrying=("Yesterday you said tomorrow"
                       "Don't let your dreams be dreams"
                       "And you're not going to stop there"
                       "No, what are you waiting for?")

declare -a youDidIt=("You should get to the point where anyone else would quit"
                     "Make your dreams come true"
                     "Nothing is impossible"
                     "And you're not going to stop there"
                     "If you're tired of starting over")

justdoit()
{
  sudo "$@"

  if [ $? -eq 0 ]; then
    NUM=${#youDidIt[@]}
    CHOICE=$(expr "$(echo $RANDOM%${NUM} | bc) + 1")
    R=$RANDOM
    echo "${youDidIt[${CHOICE}]}"
  else
    NUM=${#keepTrying[@]}
    CHOICE=$(expr "$(echo $RANDOM%${NUM} | bc) + 1")
    R=$RANDOM
    echo "${keepTrying[${CHOICE}]}"
  fi
}