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#!/bin/bash
# manage /etc/hosts
isIp() {
    # test variable is an ip address or not
    # true: return 0
    # false: return 1
    local ip=$1
    local stat=1
    if [[ $ip =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
        OIFS=$IFS

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#!/bin/sh
[ -z $1 ] || dig +nocmd +noall +answer +stats $@ | grep 'IN\|Query time' | sed 's/;; Query time://' | sed ';N;s/\n//'

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#include <assert.h>
#include <errno.h>
#include <fstab.h>
#include <inttypes.h>
#include <malloc.h>
#include <mntent.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/quota.h>

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#!/bin/bash
usage(){
    echo "usage: $0 <addrec> <view> <zone> <domain> <type> <value> <mxpr> <ttl>"
    echo "usage: $0 <delrec> <view> <zone> <domain> [type] [value] [mxpr] [ttl]"
    exit 1
}

DEBUG() {
    if [[ $DEBUG = true ]]; then
        "$@"

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virsh pool-define-as default dir - - - - /var/lib/libvirt/images
virsh pool-build default
virsh pool-start default
virsh pool-autostart default
virsh pool-list

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#! /usr/bin/env python
# -*- coding: utf-8 -*-

import time, os, socket
import json

metric = ['usr', 'nice', 'sys', 'idle', 'iowait', 'irq', 'soft', 'steal', 'guest']
host = socket.gethostname()

def get_cpu_core_stat(num):

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Name:		falcon-agent
Version:	0.4
Release:	1%{?dist}
Summary:	falcon-agent

Group:		system/daemon
License:	GPL
URL:		http://open-falcon.com/
Source0:	http://open-falcon.com/download/%{name}-%{version}.tar.gz
BuildRoot:	%(mktemp -ud %{_tmppath}/%{name}-%{version}-%{release}-XXXXXX)

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#!/bin/bash
# send named metrics to falcon-agent

RNDC_BIN=/usr/sbin/rndc
STATS='/var/named/data/named_stats.txt'


rm -f $STATS
if ! $RNDC_BIN stats; then
    exit 1

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set nocompatible "关闭vi兼容
set enc=utf-8
"set number "显示行号
filetype plugin on "文件类型
set history=500 "历史命令
syntax on "语法高亮
"set autoindent "ai 自动缩进
"set smartindent "智能缩进
set showmatch "括号匹配
set ruler "右下角显示光标状态行

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http://stackoverflow.com/questions/12671587/isolated-test-network-on-a-linux-server-running-a-web-server-lightttpd-and-cu

https://code.google.com/p/coreemu/

http://stuff.onse.fi/man?program=ip-netns&section=8
http://blog.kghost.info/2013/03/01/linux-network-emulator/
http://blog.kghost.info/2013/03/27/linux-network-tun/

http://seravo.fi/2012/virtualized-bridged-networking-with-macvtap
http://blog.csdn.net/kl222/article/details/8513593