make in bash

make.sh

#!/bin/sh
#
#  This program is free software; you can redistribute it and/or modify
#  it under the terms of the GNU General Public License version 2
#  as published by the Free Software Foundation.
#
#  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, write to the Free Software
#  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
#  MA 02110-1301, USA.
#

# -- Write Your Code Here ----------------------------------------------

# DOC  help  - Print this information
# DOC.help Print this information
# DOC.help Arguments:
# DOC.help  [command] Print help on a command

make_help(){

	if [ $# -eq 1 ]; then
		grep "^# DOC.$1 " $0 | cut -d ' ' -f 3-
		return 0
	fi

	echo "Usage: <command> [argument..]"
	echo ""
	echo "Commands:"
	grep '^# DOC ' $0 | cut -d ' ' -f 3-
	echo ""
	echo "Type 'help <comand>' for help on a command"
	return 0
}

info(){
	>&2 echo $(date +'%H:%M:%S')" INFO "$@
}

warn(){
	>&2 echo $(date +'%H:%M:%S')" WARN "$@
}

debug(){
	if [ ! -z "$MAKE_TRACE" ]; then
		if [ "$MAKE_TRACE" = "1" ]; then
			>&2 echo $(date +'%H:%M:%S')" DEBUG "$@
		fi
	fi
}

set -e

COMMAND_NAME=make_help
OPTION_VERBOSE=0

ARGV=$(getopt -a -n alphabet -o vh --long help,verbose -- "$@")
if [ $? -ne 0 ]; then
	make_help
	exit 1
fi

eval set -- "$ARGV"

while true ; do
	case "$1" in
	-h|--help) make_help ; exit 0 ;;
	-v|--verbose) OPTION_VERBOSE=1 ; shift 2;;
	--) shift ; break ;;
	*) make_help ; exit 1 ;;
	esac
done

echo $1
$COMMAND_NAME $@