v5tech

使用ffmpeg合并MP4文件

ffmpeg -i "Apache Sqoop Tutorial Part 1.mp4" -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate1.ts
ffmpeg -i "Apache Sqoop Tutorial Part 2.mp4" -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate2.ts
ffmpeg -i "Apache Sqoop Tutorial Part 3.mp4" -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate3.ts
ffmpeg -i "Apache Sqoop Tutorial Part 4.mp4" -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate4.ts
ffmpeg -i "concat:intermediate1.ts|intermediate2.ts|intermediate3.ts|intermediate4.ts" -c copy -bsf:a aac_adtstoasc "Apache Sqoop Tutorial.mp4"

v5tech

知乎日报API

• v3

http://news-at.zhihu.com/api/3/stories/latest 获取今日日报

http://news-at.zhihu.com/api/3/news/latest 获取今日日报

http://news-at.zhihu.com/api/3/news/before/20140618 获取某个日期之前的日报

v5tech

http://www.synappse.pl/swift-first-steps-singleton/

//
//  Singleton.swift
//  Test
//
//  Created by Sebastian Suchanowski on 6/5/14.
//  Copyright (c) 2014 Synappse. All rights reserved.
//

v5tech

抓取PM25.in网站数据正则表达式

http://www.pm25.in/xian

抓取正则表达式

/<div\s*?class\s*?=\"value\">(.*?)<\/div>.*?<div.*?class\s*?=\"caption\">(.*?)<\/div>/im

v5tech

Swift Code 碎片整理

1. NSURLConnection

var url = NSURL(string: "http://www.stackoverflow.com")
var request = NSURLRequest(URL: url)

NSURLConnection.sendAsynchronousRequest(request, queue: NSOperationQueue(), completionHandler: {(response: NSURLResponse!, data: NSData!, error: NSError!) in
        println(NSString(data: data, encoding: NSUTF8StringEncoding))

v5tech

TO IMPORT & EXPORT DATA FROM RDBMS (MYSQL,ORACLE, etc) INTO HDFS / HIVE / HBASE

Pre-requisite

Apache Hadoop

Apache Sqoop (compatible with Hadoop version)

Apache Hive (optional)

v5tech

#准备测试数据

cat /home/hadoop/hemers.txt 
2014050201      新街口
2014050202      新街口
2014050203      新街口
2014050204      鼓楼
2014050205      岔路口
2014050206 岔路口

v5tech

Should work on RHEL, Fedora, CentOS. Tested on CentOS 5.

/etc/init.d/nginx

#!/bin/sh
#
# nginx - this script starts and stops the nginx daemon
#
# chkconfig:   - 85 15 

v5tech

为CentOS配置yum源

1. 首先备份/etc/yum.repos.d/CentOS-Base.repo

mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup

2. 添加源

v5tech

Hadoop权威指南气象数据

• 新版气象数据

下载地址:

ftp://ftp3.ncdc.noaa.gov/pub/data/noaa/isd-lite/

ftp://ftp.ncdc.noaa.gov/pub/data/noaa/isd-lite/