아주 재밌는고 유용한 project입니다. 리눅스의 스위시 아미 칼 같다고 스스로를 소개합니다. 왠만한 GNU Util은 다 여기에 porting된것 같습니다. 간단하게 test해볼때 유용한것 같습니다.

http://git.busybox.net/busybox/

git clone git://busybox.net/busybox.git

---------------

BusyBox: The Swiss Army Knife of Embedded Linux

BusyBox combines tiny versions of many common UNIX utilities into a single small executable. It provides replacements for most of the utilities you usually find in GNU fileutils, shellutils, etc. The utilities in BusyBox generally have fewer options than their full-featured GNU cousins; however, the options that are included provide the expected functionality and behave very much like their GNU counterparts. BusyBox provides a fairly complete environment for any small or embedded system.

BusyBox has been written with size-optimization and limited resources in mind. It is also extremely modular so you can easily include or exclude commands (or features) at compile time. This makes it easy to customize your embedded systems. To create a working system, just add some device nodes in /dev, a few configuration files in /etc, and a Linux kernel.

BusyBox is maintained by Denys Vlasenko, and licensed under the GNU GENERAL PUBLIC LICENSE version 2.

---------------

웹에서 바로 test해볼수 있는 LIVE VM setup도 제공합니다. Javascript PC Emulator

http://busybox.net/live_bbox/live_bbox.html

---------------

파이썬으로 만든 open source web framework에 대한 introduction을 들었습니다. 재미있는 project인것 같습니다.

----------------------

https://github.com/Pylons/pyramid/

http://docs.pylonsproject.org/en/latest/

The Pylons Project

The Pylons Project maintains the Pyramid web framework as well as additional packages intended for use with Pyramid.

http://www.pylonsproject.org/

About Pyramid

Pyramid is a very general open source Python web framework. As a framework, its primary job is to make it easier for a developer to create an arbitrary web application. The type of application being created isn’t really important; it could be a spreadsheet, a corporate intranet, or a social networking platform. Pyramid is general enough that it can be used in a wide variety of circumstances.

Here's a very simple example of a Pyramid application.

from wsgiref.simple_server import make_server
from pyramid.config import Configurator
from pyramid.response import Response

def hello_world(request):
    return Response('Hello %(name)s!' % request.matchdict)

if __name__ == '__main__':
    config = Configurator()
    config.add_route('hello', '/hello/{name}')
    config.add_view(hello_world, route_name='hello')
    app = config.make_wsgi_app()
    server = make_server('0.0.0.0', 8080, app)
    server.serve_forever()

Install Android SDK or Android Studio

http://developer.android.com/tools/studio/index.html

-------------------------

$ echo "sdk.dir=YOUR_SDK_DIR" > local.properties

You can now sync, build and install the project:

$ ./gradlew assembleDebug # assemble the debug .apk
$ ./gradlew installDebug  # install the debug .apk if you have an
                          # emulator or an Android device connected

---------------------

Gradle?

https://gradle.org

-----------------------

gradle 특징

• Gradle = Ant의 유연성 + Maven의 편리성을 조합해서 만든 빌드 시스템
• 무료 (오픈 소스)
• Java, Groovy, OSGi, 등의 프로젝트에서 빌드 관리 제공
• API 제공
• 확장성
• 빌드의 구조화를 제공하고, Multi-Project 빌드를 쉽게할 수 있도록 제공
• 다양한 방법으로 의존성 관리
• Groovy DSL(Domain Specific Language) 기반
• Groovy 기반으로 만들어서 Java 개발자가 쉽게 만들 수 있음 – 의존성 기반 프로그래밍을 위한 언어
• 필요에 따라 프로그래밍 기법을 활용한 빌드 스크립트 작성
• 빌드 스크립트는 기존 XML이 아닌 Groovy방식으로 작성
• 필요한 빌드 로직을 조합하여 사용
• Gradle Wrapper란 것이 있어서 실행하는 머신에 Gradle이 깔려있지 않아도 빌드 가능
• 다른 툴과의 통합 및 Migration이 쉬움

-------------------

Exception in thread "main" java.lang.RuntimeException: java.io.IOException: Disk quota exceeded

        at org.gradle.wrapper.ExclusiveFileAccessManager.access(ExclusiveFileAccessManager.java:78)

        at org.gradle.wrapper.Install.createDist(Install.java:47)

        at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:129)

        at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:48)

Caused by: java.io.IOException: Disk quota exceeded

        at java.io.FileOutputStream.close0(Native Method)

        at java.io.FileOutputStream.close(FileOutputStream.java:362)

        at java.io.FilterOutputStream.close(FilterOutputStream.java:160)

        at org.gradle.wrapper.Download.downloadInternal(Download.java:77)

        at org.gradle.wrapper.Download.download(Download.java:45)

        at org.gradle.wrapper.Install$1.call(Install.java:60)

        at org.gradle.wrapper.Install$1.call(Install.java:47)

        at org.gradle.wrapper.ExclusiveFileAccessManager.access(ExclusiveFileAccessManager.java:65)

        ... 3 more

아 참 재밌는 프로젝트가 널려있네. 이렇게 high level언어들도 멋진 app들이 빠르게 구동된다니 정말 믿어지지 않을정도로 무섭습니다.

http://python-eve.org/

Python REST API Framework

Eve is an open source Python REST API framework designed for human beings. It allows to effortlessly build and deploy highly customizable, fully featured RESTful Web Services.

Eve is powered by Flask, Redis, Cerberus, Events and offers support for both MongoDB and SQL backends [*].

The codebase is thoroughly tested under Python 2.6, 2.7, 3.3, 3.4 and PyPy.

from eve import Eve

app = Eve()
app.run()

$ curl -i http://example.com/people
HTTP/1.1 200 OK

20년간 MS Windows에서 programming했다는 이 사람 재밌네요.

Nicola Iarocci

10 Presentations

Kernel upgrade with binaries (3.18.3)

Update grub and reboot 

check linux kernel version

*Pre-requiste for kernel config

sudo apt-get install libncurses5-dev libncursesw5-dev

Git Clone and checkout to branch 3.18.3

http://stackoverflow.com/questions/28136815/linux-kernel-how-to-obtain-a-particular-version-right-upto-sublevel

# Clone the kernel to your local machine
$ git clone git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git
$ cd linux-stable

# to check kernel version
$ make kernelversion

# Find the tag for the version you want
$ git tag -l | grep 3.18.3
v3.18.3

# Create a new branch with that tag
$ git checkout -b my3.18.3 v3.18.3

Build

Make menuconfig 

make

make -j8 ; -j for multi thread

make modules_install

make install

#or oneline command

make -j8 && make modules_install && make install

Make Boottable, and config bootloader(grub)

add new entry for new kernel

cd /boot

mkinitrd -o initrd.img -<kernelversion> <kernelversion>

???? 

(ZeroMQ,ØMQ, 0MQ 계속 update되는 글입니다)

http://zguide.zeromq.org/page:all

https://github.com/zeromq/libzmq

http://www.slideshare.net/fedario/zero-mq-with-nodejs?related=1 ; ZeroMQ with NodeJS

FACT about ZMQ

http://bcho.tistory.com/876 ; 장단점

http://bcho.tistory.com/870

http://imjuni.tistory.com/757

*IDE

http://www.nodeclipse.org/ ; eclipse

http://www.jetbrains.com/webstorm/ ; 유료 IDE

*Ebook

Node.js_recipes.pdf

Practical Node.js Building Real-World Scalable Web Apps.pdf

Pro iOS and Android Apps for Business with jQuery Mobile Node.js and MongoDB.pdf

Pro Node.js for Developers.pdf

*Lynda.comVideo

*Bower (package manager)

https://github.com/bower/bower

http://www.slideshare.net/lennymarkus/node-js-at-paypal?qid=bbea8ccc-5081-49d3-902d-51709f2b785f&v=qf1&b=&from_search=2 ; Node.js at Paypal

http://www.slideshare.net/clonncd/yeoman-a-nodejs-cli-tool-for-web-developers?qid=bbea8ccc-5081-49d3-902d-51709f2b785f&v=qf1&b=&from_search=9

*Grunt (javascript task runner)

http://www.slideshare.net/dougrdotnet/grunt-getting-started?qid=13f621ac-3bab-4786-be5a-d9aed4c6479d&v=default&b=&from_search=1

http://www.slideshare.net/brentswisher/building-your-own-personal-minion-with-gruntjs?qid=13f621ac-3bab-4786-be5a-d9aed4c6479d&v=default&b=&from_search=4

$80이면 JTAG를 살수있네요. Trace32로 알려진 Lauterbach에서 만든 HW debugger가 이 세상을 지배한지 20년쯤 됐나요? 많은 사람이 flash용으로 T32를 사용하지요. 진짜 debugging도 일년에 한번 쓸까말까인데, 매번 license를 upgrade하면서 너무 비싸다는 생각을 지울수가 없었습니다. IT회사에서 90% 수량은 이렇게 low cost로 바꾸고 T32도 기능적으로나 안정적으로나 우수한면이 있기때문에 소량만 사면 좋을것 같습니다.

아래 모델은 파워도 필요없고 USB에서 파워까지 끌어다 쓰는 low cost, low power 궁극의 embedded hw debugger(JTAG)입니다.

10여년전에도 MDS라는 한국회사라 이런것을 꿈꿨던것 같은데, 결국 적당한 타협점을 찾고 안주했을까요? 이런 시장에 명함도 못보겠네요.

http://www.tincantools.com/JTAG/Flyswatter2.html

http://en.wikipedia.org/wiki/Libtorrent

http://en.wikipedia.org/wiki/Distributed_hash_table

http://en.wikipedia.org/wiki/BitTorrent

http://www.libtorrent.org/streaming.html ; streaming

http://en.wikipedia.org/wiki/Bram_Cohen

https://github.com/rakshasa/rtorrent ; torrent client c++

http://sourceforge.net/projects/torrent-file-editor/?source=directory ; torrent file viewer and editor

http://sourceforge.net/projects/torrentfilehashchecker/?source=directory ; hash checker

http://sourceforge.net/projects/transmisson-remote-gui.mirror/?source=directory ; transmission torrent client, pascal

 distributed hash table (DHT) 라는 것이 2000년대 초반에 정부기관에서 펀드도 많이해주고 개발이 많이 됐었네요.

-----------------------

In 2001, four systems—CAN,^[3] Chord,^[4] Pastry, and Tapestry—ignited DHTs as a popular research topic. A project called the Infrastructure for Resilient Internet Systems (Iris) was funded by a $12 million grant from the US National Science Foundation in 2002.^[5] Researchers included Hari Balakrishnan and Scott Shenker.^[6] Outside academia, DHT technology has been adopted as a component of BitTorrent and in the Coral Content Distribution Network.

Streaming 지원은 은 2007년 부터 만들어졌다고 되어 있네요.

--------------

In general, BitTorrent's non-contiguous download methods have prevented it from supporting progressive download or "streaming playback". However, comments made by Bram Cohen in January 2007^[11] suggest that streaming torrent downloads will soon be commonplace and ad supported streaming^[12] appears to be the result of those comments. In January 2011 Cohen demonstrated an early version of BitTorrent streaming, saying the feature was projected to be available by summer 2011.^[13] As of 2013, this new BitTorrent streaming protocol is available for beta testing.^[14]

piece picking

This question is answered by torrent::request_time_critical_pieces() in libtorrent.

download queue time

timeouts

-----------------------

Podcast SW에서도 지원했었네요.

• Podcasting software is starting to integrate BitTorrent to help podcasters deal with the download demands of their MP3 "radio" programs. Specifically, Juice and Miro (formerly known as Democracy Player) support automatic processing of .torrent files from RSS feeds. Similarly, some BitTorrent clients, such as µTorrent, are able to process web feeds and automatically download content found within them.

블리자드가 게임 download를 위해서도 썼다니.

• Blizzard Entertainment uses BitTorrent (via a proprietary client called the "Blizzard Downloader") to distribute content and patches for Diablo III, StarCraft II and World of Warcraft, including the games themselves.^[36]