mengqingzhong

#!/bin/bash
function show_elapsed_time()
{
        user_hz=$(getconf CLK_TCK) #mostly it's 100 on x86/x86_64
        pid=$1
        jiffies=$(cat /proc/$pid/stat | cut -d" " -f22)
        sys_uptime=$(cat /proc/uptime | cut -d" " -f1)
        last_time=$(( ${sys_uptime%.*} - $jiffies/$user_hz ))
        lastday=$(( $last_time/3600/24 ))
        lasthour=$(( ($last_time-$lastday*3600*24)/3600 ))

mengqingzhong

git config --global user.name ""
git config --global user.email ""

git config --global color.ui auto
git config --global alias.lg "log --color --graph --pretty=format:'%Cred%h%Creset -%C(yellow)%d%Creset %s %Cgreen(%cr) %C(bold blue)<%an>%Creset' --abbrev-commit"

mengqingzhong

#include<stdio.h>
#include <getopt.h>
int flag;
struct option long_options[] = {
		{ "deamon", no_argument, NULL, 'D' },
		{ "loglevel", required_argument, NULL, 'L' },
		{ "ip", required_argument,&flag, 1 },
		{ "port", required_argument, &flag, 2 },

};

mengqingzhong

#include <ev.h>
#include <unistd.h>
#include <stdio.h> // for puts

// every watcher type has its own typedef'd struct
// with the name ev_TYPE
ev_io stdin_watcher;
ev_timer timeout_watcher;

// all watcher callbacks have a similar signature

mengqingzhong

git config --global color.status auto  
git config --global color.diff auto  
git config --global color.branch auto  
git config --global color.interactive auto  

mengqingzhong

#include<iostream>
#include<algorithm>
using namespace std;

typedef struct Node
{
	Node*left;
	Node*right;
	int value;
	int height;

mengqingzhong

#include<iostream>
#include<algorithm>
#include <stdio.h>
using namespace std;

#define COUNT 1501

int father[COUNT];
int childcnt[COUNT];
int n;

mengqingzhong

package main

import (
	"crypto/rand"
	"crypto/rsa"
	"crypto/x509"
	"crypto/x509/pkix"
	"encoding/pem"
	"fmt"
	"math/big"

mengqingzhong

Create Root CA (Done once)

Create Root Key

Attention: this is the key used to sign the certificate requests, anyone holding this can sign certificates on your behalf. So keep it in a safe place!

openssl genrsa -des3 -out rootCA.key 4096

mengqingzhong

#!/bin/bash

###### For generate_certs.sh script ######
export COUNTRY=US
export STATE=California
export CITY=Irvine
export ORGANIZATION=YourCompany
export UNIT=YourBU
export COMMON_NAME=server.example.com
export SAN_NAME_1=server.example.com