Bash Template - Just a simple bash template that allows for easy argument parsing.

template.bash

#!/bin/bash
shopt -s -o nounset

###################################################
# File:
# Notes:
# Revisions:
#	Date       Developer Description
#	---------- --------- -----------
#       YYYY-MM-DD Name      Initialized file
###################################################

###################################################
# Initialize Variables
INPUT_VALUES=""
VERBOSITY=0

###################################################
# Functions

###################################################
# Parse Arguments
PREV_ARG=""
while [ $# -gt 0 ]; do
	# Code to allow for multiple actions for an agrument
	if [ -n "$PREV_ARG" ] && [ $(echo $1 | grep "^-" -c) -eq 0 ] ; then
		case "$PREV_ARG" in
			-opt1)	INPUT_VALUES="$INPUT_VALUES $1"
				[ $VERBOSITY -gt 0 ] && echo "Received input value: '$1'"
				shift
				continue;;
		esac
	fi
	PREV_ARG="$1"

	# Parse through the arguments
	case "$1" in
		-opt1)		INPUT_VALUES="$2"
				[ $VERBOSITY -gt 0 ] && echo "Received input value: '$2'"
				shift;;
		-v|--verbose)	VERBOSITY=1
				echo "Verbose mode on";;
		*)		echo "ERROR: Could not parse option: '$1', exiting..."
				exit 1;;
	esac
	shift
done

##################################################
# Run program

echo "Received input values: ${INPUT_VALUES}"

exit 0