Unix Clear

I hope that after reading this article, the reader has a deeper understanding of the process exception exit problem, a more systematic comb, can also help debug such process crashes, write more stable, more reliable software. Process exception exit process exit means the end of the process lifecycle, system resources are reclaimed, and processes are destroyed from the operating system environment. A process exception exit is when a process terminates unexpectedly during run, causing the task that the process should have continued to fail to complete. A process exception exit may have the following negative effects on the software User: The software loses some or all of its functionality and cannot be completed ...

To complete this chapter, you can do the following: Check http://www.aliyun.com/zixun/aggregation/18415.html > Network connection errors using the following command: Lanscan lanadmin Linkloop arp ping netstat-i netstat-a netstat-r hostname nslookup 1. Network error-checking tool in Unix ...

Intermediary transaction SEO diagnosis Taobao guest Cloud host Technology Hall Whether you are a master programmer, or technology enthusiasts, in the process of WEB development, always avoid making all kinds of mistakes. If you make a mistake, you can correct it. But if you make some mistakes, you will bring great losses and regrets. Surprisingly, these errors are often the most common and easiest to avoid. 　　Here are five of the most significant mistakes you'll need to be aware of. 1. "Reinvent the wheel" you want to make your site unique, different from competitors ...

This paper introduces how to build a network database application method by MySQL of the golden combination of Web database, PHP is a server-side embedded hypertext Processing language similar to Microsoft ASP, it is a powerful tool to build dynamic website. While MySQL is a lightweight SQL database server that runs on a variety of platforms, including Windows NT and Linux, and has a GPL version, MySQL is considered the best product for building a database-driven dynamic Web site. PHP, MySQL, and Apache are Linux ...

People often ask me if they really should believe in Oss. In other words, the worry is: is the OSS the angel that brings us a good life, or is it a demon that destroys our lives? As a matter of fact, this problem has been raised since the beginning of Linux and various BSD (Berkeley Software distribution) operating systems. In reality, any organization or enterprise is very cautious in planning to use a free software that is not from a reputable merchant. As a routine, generally ...

The simplest way to compromise is to have your password written somewhere, and there is no guarantee that no one else can see it except you. If someone gets your password and your private key file, the entire encryption system will be silent. Another old topic is the password not too simple, note that PGP is "password" passphase, rather than "password" password that is, you can include multiple words and spaces in the password. A wily attacker may use a famous book to find your password. So in order to get a good and difficult to guess password, you can sporogenous some sentences or find ...

The story about Linux is actually a battle between the two ends. In the cloud, the operating system has become a top player. While in the enterprise, Linux is eroded the exclusive territories of Unix systems, but if you want to talk about the operating system, still Microsoft's Windows in the enterprise dominate. With the popularity of cloud computing, Linux may (but not be guaranteed) gain more and more acceptance in the enterprise. Linux was born in 1991, a small but growing share of the business. The operating system has never let big companies think it is better than Microsoft Wi ...

In the past, we have introduced some principles of software development, such as the 10 commandments of high quality code and the UNIX design principles described in the UNIX legend (next article). I believe that you can learn from middle school some knowledge of design principles, as I said in the "How Do I Recruit procedures", a good programmer usually consists of its operational skills, knowledge level, experience level and ability four aspects. Here I would like to talk about some of the principles of design, I think these things belong to the long-term experience summed up knowledge. These principles should be understood by every programmer. But...

When Guoda, the data is big also should find a destination. Some people say that big data is the apple of cloud computing, the place of the princess. Although the emperor's daughter does not worry about marrying, but the big data is not as good as the virtual Lori best-selling, everyone in hot discussion big data, once want to talk about marriage, many people seem to have a marriage phobia. Do not doubt the big data is not enough charm, because the big data although it makes people's imagination, but the big data of the wedding night full of suspicious. Just the past 2012 is really big data of the year, the matchmaker seems to have broken the threshold of each data center, everyone on the big data ...

When Guoda, the data is big also should find a destination. Some people say that big data is the apple of cloud computing, the place of the princess. Although the emperor's daughter does not worry about marrying, but the big data is not as good as the virtual Lori best-selling, everyone in hot discussion big data, once want to talk about marriage, many people seem to have a marriage phobia. Do not doubt the big data is not enough charm, because the big data although it makes people's imagination, but the big data of the wedding night full of suspicious. Just the past 2012 is really big data of the year, the matchmaker seems to have broken the threshold of each data center, everyone on the big data ...