[bash] re-use choices made

FLX · 09-24-2009, 08:23 AM

I created the following script:

Code:

  echo -e "\033[1mChoose something?\033[0m"
  while true
  do
  read updatechoicenv
  case "$updatechoicenv" in
    "1")
        echo choice 1!
        break
    ;;
    "2")
        echo choice 2
        break
    ;;
    "3")
        echo choice 3!
        break
    ;;
    * )
    echo "No valid option received. Try again."
    ;;
  esac
  done
  echo gonna do some other stuff, kthxbai!
  echo i shall now return to updatechoicenv
  echo
  read updatechoicenv
  case "$updatechoicenv" in
    "1")
        echo option 1 has been chosen earlier, doing some stuff based on this!
        break
    ;;
    "2")
        echo option 2 has been chosen earlier, doing some stuff based on this!
        break
    ;;
    "3")
        echo option 3 has been chosen earlier, doing some stuff based on this!
        break
    ;;
  esac

I would like to use the choice that has been made earlier to do some stuff further down the script, how can I do this?

Thanks,

Dennis

catkin · 09-24-2009, 08:49 AM

Quote:

Originally Posted by FLX

I would like to use the choice that has been made earlier to do some stuff further down the script, how can I do this?

Just keep it in a different variable name:

Code:

  echo -e "\033[1mChoose something?\033[0m"
  while true
  do
  read updatechoicenv1
  case "$updatechoicenv1" in
    "1")
        echo choice 1!
        break
    ;;
    <more cases>
    * )
    echo "No valid option received. Try again."
    ;;
  esac
  done
  echo gonna do some other stuff, kthxbai!
  echo i shall now return to the source
  echo
  read updatechoicenv2
  case "$updatechoicenv2" in
    "1")
        if [[ "$updatechoicenv2" -eq "$updatechoicenv1" ]]; then
            echo option 1 has been chosen earlier, doing some stuff based on this!
        else
            <whatever>
        fi
        break
        ;;
    <more cases>
  esac

But those breaks are going to break the script out of the while loop before it gets to the second read except when the first read returns an invalid choice! The ;; breaks out of the case statement.