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#!/bin/bash# This script processes short and long command# line arguments.  This is similar in function# to getopt and getopts but I am trying to make it# more flexible and usable since neither one# is a great solution for my purposes atleast.### PROBLEMS ##### - Too much repetition is required.  The programming is forced to## define the corresponding short and long arguments in two places.## This is a waste of time and increases the chances of bugs.## This *MUST* be fixed.## Tuesday December 12th 7:57 PM ## --fatsheepuntil [ "$1" = "" ] ; do	if [ "${1:0:1}" = "-" ] ; then		if [ "${1:1:1}" = "-" ] ; then			##################################			### Processing Long Arguments ####			##################################			case "${1:2}" in				help ) 					helpflag="1";;				verbose ) 					verbose="1";;				info ) 					infoflag="1";;				test ) 					testflag="1";;					f ) 					filename="1"					shift					file="$1";;				* ) # This case applies to all undefined long arguments.					echo "Error: undefined argument: ${1}"					errorflag="1";;				esac		else			##################################			### Processing Short Arguments ###			##################################			nu="1"			arglength="${#1}"			until [ "$nu" -eq "$arglength" ] ; do				case "${1:${nu}:1}" in					h )						helpflag="1";;					v )						verbose="1";;					i )						infoflag="1";;						t )							testflag="1";;						f )						filename="1"						shift						file="$1";;					* ) # This case applies to all undefined short arguments.						echo "Error: undefined argument: -${1:${nu}:1}"						errorflag="1";;				esac				nu="$((nu + 1))"			done		fi	else		echo "Error: undefined argument: ${1}" # catches all arguments not preceeded with '-'		errorflag="1"	fi	shiftdone if [ "$errorflag" = "1" ] ; then	echo "Argument Syntax Error: Exiting..."	exit 1fiif [ "$filename" = "1" ] && [ "$file" = "" ] ; then	echo "Error: No file specified!"	exit 1fiif [ "$helpflag" = "1" ] ; then	if [ "$verbose" = "1" ] ; then		echo 'Display Help Verbosely!'	else		echo 'Display Help!'	fifiif [ "$infoflag" = "1" ] ; then	if [ "$verbose" = "1" ] ; then		echo 'Display Info Verbosely!'	else		echo 'Display Info!'	fifiif [ "$testflag" = "1" ] ; then	if [ "$verbose" = "1" ] ; then		echo 'Test Verbosely!'	else		echo 'Test!'	fifiif [ "$filename" = "1" ] ; then	echo "Filename: $file"fi