Powersearch Old Files with Bash Waste Script

Waste is a simple script that makes it easier to search for old files in a path on a linux systems.   Waste features allow you do display the listing sorted by day or size and search for files a specific number of days old or between a range of days old.    It simplifies the usage of the find command by wrapping it up into a easy to use script.   Its appeal is as a cleanup script for directories that have files that need to be purged over time.

#!/bin/bash
if [[ $# = 0 || $1 = "-h" || "$#" -lt 4 ]]; then
        echo "Usage: [-d|-s] [-r {start end}|-o {start}] directory"
        echo " -h displays the help"
        echo " -d display listing sorted by day"
        echo " -s display listing sorted by size"
        echo " -r display files between a specific number of days old"
        echo " -o display files older then a specific number of days"
        echo " Example1: waste -d -r 10 20 /home"
        echo " Example2: waste -s -o 30 /process"
        exit
fi
case "$1" in
        '-s')
                case "$2" in
                        '-r')
                                if [ "$#" -lt 5 ]; then
                                        echo "Usage: [-d|-s] [-r {start end}|-o {start}] directory"
                                        exit
                                fi
                                printf "Date\t\tSize\tDirectory/File\n"
                                /usr/bin/find $5 -type d -daystart -mtime +$3 -mtime -$4 -printf "%CY-%Cm-%Cd\t" -maxdepth 1 -exec /usr/bin/du.new -s --block-size=M "{}" \; | /bin/sort -k2nr
                                ;;
                        '-o')
                                if [ "$#" -lt 4 ]; then
                                        echo "Usage: [-d|-s] [-r {start end}|-o {start}] directory"
                                        exit
                                fi
                                printf "Date\t\tSize\tDirectory/File\n"
                                /usr/bin/find $4 -type d -daystart -mtime +$3 -printf "%CY-%Cm-%Cd\t" -maxdepth 1 -exec /usr/bin/du.new -s --block-size=M "{}" \; | /bin/sort -k2nr
                                ;;
                esac
        ;;
        '-d')
                case "$2" in
                        '-r')
                                if [ "$#" -lt 5 ]; then
                                        echo "Usage: [-d|-s] [-r {start end}|-o {start}] directory"
                                        exit
                                fi
                                printf "Date\t\tSize\tDirectory/File\n"
                                /usr/bin/find $5 -type d -daystart -mtime +$3 -mtime -$4 -printf "%CY-%Cm-%Cd\t" -maxdepth 1 -exec /usr/bin/du.new -s --block-size=M "{}" \; | /bin/sort -k2nr | /bin/sort
                                ;;
                        '-o')
                                if [ "$#" -lt 4 ]; then
                                        echo "Usage: [-d|-s] [-r {start end}|-o {start}] directory"
                                        exit
                                fi
                                printf "Date\t\tSize\tDirectory/File\n"
                                /usr/bin/find $4 -type d -daystart -mtime +$3 -printf "%CY-%Cm-%Cd\t" -maxdepth 1 -exec /usr/bin/du.new -s --block-size=M "{}" \; | /bin/sort -k2nr | /bin/sort
                                ;;
                esac
        ;;
esac