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  A possible way to recover deleted files on Linux

Last week I was generating a MD5 sum for an virtual machine image on one OpenNebula server: # ls -l test.img -rw-r--r-- 1 root root 10486808576 Oct 12 02:21 test.img # md5sum test.img At the same time I was clearing the files on the server on another terminal and deleted the above image file mistakenly with : # rm test.img Since this image file is 10GB, it took some time to remove this file from the server, so I used the Ctrl+Z command to suspend the remove command. [1]+ Stopped ...

   Linux,File,Recovery     2013-11-26 07:03:37

  Live in Beijing and Thinking about Starting a Tech Company? Read. This. Post. Now.

The Disrupt Beijing Hackathon starts in a little more than 24 hours, and we’ve been working hard over the last few days to make it even more of a no-brainer for local Beijing developers to attend.In addition to the chance to be the next GroupMeor win valuable prizes, we have decided to give all Hackathon attendees who complete a hack and present in the 24-hour period free tickets to the Disrupt conference Monday and Tuesday. That’s a $1,000-plus value for s...

   Startup,Beijing,TechCrunch,Disrupt,2011     2011-10-28 12:41:43

  #46 – Why software sucks

No one makes bad software on purpose. No benevolent programmer has ever sat down, planning out weeks of work, with the intention of frustrating people and making them cry. Bad software, or bad anything, happens because making things is hard, making good things doubly so. The three things that make it difficult are: Possessing the diverse skills needed not to suck.Understanding who you’re making the thing for.Orchestrating the interplay of skills, egos and constraints over the course of...

   Software design,Sucks,Software industry     2012-03-19 13:10:37

  If programming language is a knife, what would it be?

The following diagram shows that if is a programming language is a knife, what would it be.? This figure I personally feel very interesting.I try to give my  explanation for some languages  here:.C + +, C and Pascal are the Swiss Army knife. The knife of the C language has a USB, that can do hardware operation. C++, a knife with everything, C + + is a variety of languages​​. Swiss army knife (figure C+ + is very powerful, do not think that it is fictional, this knife is r...

   Programming language,Knife,Swiss army life     2012-04-21 00:52:22

  Things to consider when purchasing a standby emergency generator

Generators come in many forms these days and portable generators, in particular, are proving to be very popular. However, there is still a strong pull for the more conventional home standby generator, after all, no other kind of generator can really offer the same power, can it? But what do you need to consider when buying a home standby generator? Reading home standby generator reviews is always a good first step to help educate yourself about standby emergency generators but I can go a little ...

   GENERATOR,HARDWARE     2019-08-10 10:24:31

  Alibaba launches NASA program

On March 9, the China E-Commerce giant Alibaba held its first internal tech conference in its headquarter Hangzhou. During this conference, Jack Ma, Alibaba founder, announced a new program code named "NASA" which aims to build up technologies serving 2 billion people in next 20 years by forming independent and powerful R&D department. On March 13, Alibaba formerly announced this program to the public. The research area of this program would include machine learning, chi...

   ALIBABA,NASA,CHINA,NEWS     2017-03-13 11:32:22

  Data Scientists and Their Harder Skills than Big Data

The field of data science is often confused with that of big data. Data science is an aid to decision makers in a company with a logical approach.  Who is a Data Scientist?  A Data Scientist reviews a huge collection of data(that may extend to a couple of terabytes of disk space or thousands of excel sheets). This humongous chunk of data is not feasible for being handled, sorted and analyzed by a single person. Here we require the help of data science, and most recently, the field of A...

   BIG DATA     2017-12-13 04:22:55

  A journey to investigate a goroutine leakage case

In Go, creating goroutines is straightforward, but improper usage may result in a large number of goroutines unable to terminate, leading to resource leakage and memory leaks over time. The key to avoiding goroutine leaks is to manage the lifecycle of goroutines properly. By exporting runtime metrics and utilizing pprof, one can detect and resolve goroutine leakage issues. This post will go through one real case encountered by the author. The author maintains a service that connects to a targe...

   TIMEOUT,SSH,GUIDE,DEBUG,LEAK,GOROUTINE,PPROF,GOLANG     2024-03-16 11:00:23

  Learn these technical skills within one day

It takes days and days reading books, practicing and involving in real project if you want to learn a programming language well. It's just like a marathon, you will get more if you can insist longer. During this long and boring period, there are always something you can learn within a short period of time, like within one day. These skills can bring your big satisfaction. Below are a list of technical skills which you can pick up within one single day, they are advocated by Jacob Jensen, a Googl...

   Technical skill     2014-06-12 09:33:15

  How does iPhone 5 compete with the latest Android and Windows Phone?

Apple's latest release of the iPhone 5 finally resolves some key issues: the larger screen, high-speed 4G LTE network, as well as a higher pixel front camera, which previously were the advantages of the Android phone. In addition, one-piece aluminum housing also gains praise. How does IPhone 5 compete with the latest Android and Windows Phone? In fact, Apple is now facing more intense competition.The most significant upgrade is the new display, 4-inch retina display compared with the old is a gr...

   iPhone 5,Android,Windows Phone,Comparison     2012-09-12 21:58:27

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