Revise paste scanner script

#!/bin/bash
###################################################################### 
#Copyright (C) 2022  Kris Occhipinti
#https://filmsbykris.com

#This program is free software: you can redistribute it and/or modify
#it under the terms of the GNU General Public License as published by
#the Free Software Foundation, either version 3 of the License, or
#(at your option) any later version.

#This program is distributed in the hope that it will be useful,
#but WITHOUT ANY WARRANTY; without even the implied warranty of
#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#GNU General Public License for more details.

#You should have received a copy of the GNU General Public License
#along with this program.  If not, see <http://www.gnu.org/licenses/>.
###################################################################### 
#set -e
DEV="escl:https://192.168.1.170:443"
DIR=`mktemp -d`
CUR=$PWD

cd $DIR
echo "$DIR"

if [[ "$1" ]]
then
  FILE="$1"
else
  read -p "File Name: " FILE
fi

[[ "$FILE" ]] || exit 1

[[ "$FILE" != *".pdf" ]] && FILE="${FILE}.pdf"

REZ="$(echo -e "150\n200\n300"|fzf --prompt="Resolution")"

[[ "$REZ" ]] || exit 1

while [ 1 ]
do
  scanimage --format png -d "$DEV" --output-file "$(date +%s).png" --resolution $REZ 
  c="$(echo -e "Continue\nQUIT"|fzf)"
  [[ "$c" != "Continue" ]] && break
done

convert *.png "$CUR/$FILE"
opd "$CUR/$FILE"
open "$CUR/$FILE"