[shell] 基本规范

#!/bin/bash
# -------------------------------------------------------------------------------
# Filename:    check_mem.sh
# Revision:    1.1
# Date:        2009/02/10
# Author:      Larkin
# Email:       Larkin@gmail.com
# Website:     www.csdn.com
# Description: Plugin to monitor the memory of the system
# Notes:       This plugin uses the "" command
# -------------------------------------------------------------------------------
# Copyright:   2009 (c) Larkin
# License:     GPL
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# 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 (or with Nagios);
#
# Credits go to Ethan Galstad for coding Nagios
# If any changes are made to this script, please mail me a copy of the changes
# -------------------------------------------------------------------------------
#Version 1.0
#The first one , can monitor the system memory
#Version 1.1
#Modify the method of the script ,more fast