Returning different values for same code?

[Sephiroth]

Alright, I have a problem here. I am developing a script to automate some database setup, but I have an issue I cannot figure out. I prompt for some input with whiptail and select a default if nothing is entered. However, if you do not enter anything, it normally returns 0, but this time it is returning an empty value.

Code: Select all

  # This one does work!

  # Set the source path
  TMPPATH=$(whiptail --backtitle "Linux Build Configuration" \
    --title "Source-Code Path" \
    --inputbox "Default: $SRCPATH" 0 60 \
    3>&2 2>&1 1>&3)

  # Exit if cancelled
  if [ $? != "0" ]; then
    echo "Cancelled by the user. No modifications have been made to your system."
    exit 0
  fi

  # Change the path only if it was modified
  if [ ! -z "$TMPPATH" ]; then
    SRCPATH="$TMPPATH"
  fi

  # This one does NOT work?!

  # Get the database admin username
  DB_TMP=$(whiptail --backtitle "Linux Build Configuration" --title "Database Administrator Username" \
    --inputbox "Default: root" 0 60 \
    3>&2 2>&1 1>&3)

  # Exit if cancelled
  if [ $? != "0" ]; then
    echo "Cancelled by the user. No modifications have been made to your databases."
    return 0
  fi

  # Set the admin username if one was specified
  if [ ! -z "$DB_TMP" ]; then
    DB_ADMIN="$DB_TMP"
  fi

So what is wrong with the second code?

[saulgoode]

Let's try the obvious first. Have you made an assignment to $DB_ADMIN earlier in the script?