Script for running Zork as multiple possible users

zork2.sh

#!/bin/bash
export HOME="/home/pi"
export TERM="linux"

read CALL
CALL=$(echo "$CALL" | tr -d '\r')

mkdir -p "/home/pi/zork/nodesaves/$CALL"

echo "Hello $CALL! Do you wish to load a saved game? [y/N]"
read REPLY
REPLY=$(echo "$REPLY" | tr -d '\r')
echo

case "$REPLY" in
  y|Y ) echo "Enter filename to load"; read FILENAME; FILENAME=$(echo "$FILENAME" | tr -d '\r'); echo "Loading $FILENAME"; /usr/games/dfrotz -R /home/pi/zork/nodesaves/$CALL -L /home/pi/zork/nodesaves/$CALL/$FILENAME /home/pi/zork/DATA/ZORK1.DAT;;
  * ) echo "Starting a new game..." ;/usr/games/dfrotz -R /home/pi/zork/nodesaves/$CALL /home/pi/zork/DATA/ZORK1.DAT;;
esac

echo "Cleaning up filenames (removing control characters)"
cd /home/pi/zork/nodesaves/$CALL/
for file in *; do mv "$file" $(echo "$file" | sed -e 's/[^A-Za-z0-9._-]//g'); done