Arch Operating System

NUTTX is a real-time embedded operating system (RTOS), and it has a small size that is used in the micro-controller environment. This is fully scalable from small (8-bit) to medium-sized embedded (32-bit) systems. It is also intended to be fully compliant, fully real-time, and fully open. nuttx-6.5 Release Note: 6.5 2011-06-21 Gregory Nutt ....

There are many benefits to virtual servers, but are their security issues completely compromised? How do I ensure security? There are 10 positive steps you can take. The major problem with data center virtualization in the 2007 is "How much money and time can this technology save?" "And by 2008, the question will become" How safe will we be to adopt this technology? "It's a very difficult question to answer." A large number of vendors and consultants desperately selling virtualized products and services disagree on the risks and how to prevent them. At the same time, some security researchers are also trumpeting the risks of the theory.

In the past year, the express industry, the development of electrical and commercial logistics is growing faster, the third party logistics is a new challenge. The operation mode of the electric business Logistics "trunk + Warehouse + landing with" mature, the traditional courier companies will lose a lot of market share. 　　At the same time, the electric business logistics and express industry will also have huge logistics costs, industry supervision and other factors, and the ten popular words here, very good expression of the industry in the past year. At the beginning of the year, the traditional business Express and online shopping promotion overlay appeared, express business volume again appeared peak. Good and moving state Post Office sudden action, a paper ...

"Editor's note" Docker and CoreOS are excellent "graduates" of the Silicon Valley incubator, and it is said that two bosses have a good personal relationship, Docker do container engines, CoreOS container management, cooperation is very happy, but with the release of Rocket gradually "parted". Although Docker and CoreOS are seeking "Jane", but Docker "Jane" is to strive to achieve the most convenient use of the user, CoreOS "Jane" is the pursuit of the ultimate lightweight, which will be the future of container technology, in fact, it is difficult ...

In the past 2013 years, the mobile internet is a well-deserved Vanity Fair! From VC to the Internet giants, all the way capital poured into the wild. 　　The data show that the mobile internet has become a new entrepreneurial activity after the Internet, it is expected that the future of its investment activity will continue to grow. In addition, I observed that this year's mobile internet investment is a major feature in addition to the influx of VC capital, the internet giant also began to reach out, trying to buy the way to make up for their own in the mobile end of the short board. I think, for mobile internet entrepreneurs, the giant ...

Wang Jing Book "I first in the field of environmental protection investment, about 40 years ago."　　"Private equity fund Hao Capital General partner, Monitor Group China District Board Chairman Hotard (Edgar G. Hotard) told reporters.　　For its more than 40 years of investment experience in the Low-carbon field, Hotard in Qingdao 2011 China Green Company Annual meeting to accept this reporter's interview. At the Green Company's annual meeting, he and investors from mainland China are looking for new opportunities in the Low-carbon market. Even though, the full of Chinese makes him a little hard, but the Chinese city ...

The problem of engineering quality should be paid great attention by the whole society.　　Report to our real name of the migrant workers Shi Youlong, the report is a commercial highway tunnel construction in the process of shoddy, shoddy, this is a matter of public safety issues.　　In recent years, engineering quality problems frequently, bring us the Lesson of Blood: 2008, Kunming Xiao Zhuang overpass collapsed, resulting in 2 dead, 4 injured; in 2009, Zhuzhou Viaduct collapsed in Hunan province, causing 9 dead, 16 injured; January 3, 2010, Kunming New airport approach collapse, resulting in 7 death 34 injury ... Frequent accident is not proof ...

Warning: As you may have guessed, the approach described here may cause your system to fail to boot and you have to rely on yourself to fix it. Apt Install linux-image-686 This guide explains how to install http://www.aliyun.com/zixun/aggregation/13835.html on a dedicated server via SSH > Ubuntu. I assume that your supplier has provided you with a guide to ...

Note: This article starts in CSDN, reprint please indicate the source. "Editor's note" in the previous articles in the "Walking Cloud: CoreOS Practice Guide" series, ThoughtWorks's software engineer Linfan introduced CoreOS and its associated components and usage, which mentioned how to configure Systemd Managed system services using the unit file. This article will explain in detail the specific format of the unit file and the available parameters. Author Introduction: Linfan, born in the tail of it siege lions, Thoughtwor ...

I. Introduction We often see some similar in the program disassembled code 0 × 32118965 this address, the operating system called linear address, or virtual address. What is the use of virtual address? Virtual address is how to translate into physical memory address? This chapter will give a brief account of this. 1.1 Linux Memory Addressing Overview Modern operating systems are in 32-bit protected mode. Each process can generally address 4G of physical space. But our physical memory is generally hundreds of M, the process can get 4 ...