How can I shortern my command line prompt's current directory?

Question

I am using Ubuntu and I am tired of this long prompts in bash when I am working with some deep directory hierarchy. So, I would like to tweak my PS1 to shorten the working d

Answer 1

generatePwd(){
  set -- "`pwd | sed -e s.${HOME}.~.g`"
  IFS="/"; declare -a array=($*)
  srt=""
  count=0
  for i in ${!array[@]}; do
      # echo ${array[i]} - $i/${#array[@]}
      if [[ $i == 0 ]]; then
        srt+=""
      elif [[ $i == $((${#array[@]}-1)) ]] || [[ $i == $((${#array[@]}-2)) ]]; then
          srt+="/${array[i]}"
      else
        count=$((${count}+1))
      fi
  done
  if [[ $count != 0 ]]; then
    srt="${array[0]}/.$count.$srt"
  else
    srt="${array[0]}$srt"
  fi
  echo "${srt}"
}

export PS1

PS1="\$(generatePwd)"

Console

$ ~/.3./machine-learning/deep-learning-computer-vision