Simple raspi "cloud" scanner

esekeyd.conf

#
# ESE Key Deamon 1.2.7 config file
#

#
# example 1: to run mutt in xterm we must set DISPLAY
#            so the command line will be as follows:
#MAIL:/bin/sh -c "DISPLAY=:0 xterm -e mutt"
#
# example 2: turn on/off GPS reciever when lid is open/closed
#RADIO(press):echo 1 >/sys/device/platform/gps/gps_power
#RADIO(release):echo 0 >/sys/device/platform/gps/gps_power
#
# example 3: run nautilus when both left meta and e keys are press
#LEFTMETA+E:nautilus
#

#KP1(press):
KP1(release):/home/pi/bin/scan.sh --mode Gray --resolution 75 --type pdf > /tmp/log.txt 2>&1
#KP2(press):
KP2(release):/home/pi/bin/scan.sh --mode Gray --resolution 150 --type pdf
#KP3(press):
KP3(release):/home/pi/bin/scan.sh --mode Gray --resolution 300 --type pdf
#KP4(press):
KP4(release):/home/pi/bin/scan.sh --mode Color --resolution 150 --type pdf
#KP5(press):
KP5(release):/home/pi/bin/scan.sh --mode Color --resolution 300 --type pdf
#KP6(press):
#KP6(release):/home/pi/bin/scan.sh --mode Color --resolution 600 --type pdf
#KP7(press):
KP7(release):/home/pi/bin/scan.sh --mode Gray --resolution 1200 --type png --nocomp
#KP8(press):
KP8(release):/home/pi/bin/scan.sh --mode Color --resolution 600 --type png --nocomp
#KP9(press):
KP9(release):/home/pi/bin/scan.sh --mode Color --resolution 1200 --type png --nocomp
#KPSLASH(press):
#KPSLASH(release):
#KPASTERISK(press):
#KPASTERISK(release):
#KPPLUS(press):
#KPPLUS(release):

scan.sh

#!/bin/bash
FILENAME="/home/pi/scan/$(date +%Y-%m-%d_%H%M%S)"

function usage {
        echo "See code"
        exit
}

SMOD="Gray"
FTYP="pdf"
RESOLUTION="150"
COMP="JPEG"
while [ "$1" != "" ]; do
        case $1 in
                -m | --mode ) shift
                        SMOD=$1
                        ;;
                -t | --type ) shift
                        FTYP=$1
                        ;;
                -r | --resolution ) shift
                        RESOLUTION=$1
                        ;;
                -n | --nocomp ) shift
                        COMP="None"
                        ;;
                -h | --help ) usage
                        ;;
                * ) usage
        esac
        shift
done

sudo scanimage --mode $SMOD --resolution $RESOLUTION --compression $COMP | convert - "$FILENAME"."$FTYP"
sudo chown pi: "$FILENAME"."$FTYP"
/home/pi/bin/dropbox_uploader.sh -f /home/pi/.dropbox_uploader upload "$FILENAME"."$FTYP" /

rm "$FILENAME"."$FTYP"