Basic Of Shell Scripting

Advanced Bash Scripting Guide is a tutorial book for Shell scripting. This book is widely used and comprehensive, with a total of 1012 pages covering almost every aspect of the shell script. It contains 376 rich commentary examples, multiple tables, and cross linking index/glossary. This book is not just a shell script tutorial, it also provides a strong interface for basic programming techniques, such as sorting and recursion. Advanced Bash Scripting Guide version 6.4 has added two ...

You can use the flexibility inherent in the command shell of Linux to create scripting languages that help you simulate DOS commands in a Linux environment. 　　 　　The specific approach is as follows. If you are an IT support expert, you like the command of Windows very much, when you first use the Linux command line, you may soon find yourself confused. The DOS commands you've been familiar with for a long time don't exist in Linux. So you will find yourself facing a terrible task: to learn and be familiar with the whole ...

Bash (GNU bourne-again shell) is the default shell of many Linux platforms, in fact, there are many traditional Unix shell, like tcsh, CSH, Ash, BSH, Ksh, and so on, SHell script is roughly similar, When you learn a shell, the rest of the shell will soon start, and most of the time, a shell script can often be used on many kinds of shells. By learning how to use bash scripting ...

Editor's note: The development and operation as a whole to look at the DevOps engineering thought gradually in the hearts of the community, this article explores the origins and development of DevOps, from the physical machine/stand-alone virtual machine deployment, to the deployment based on IaaS, and then last year, just the emergence of container based deployment. The writer, Jason, comes from a newly established Hangzhou Flying Cloud Information Technology Co., Ltd., its brand "Fit2cloud" (@fit2cloud) is a hybrid cloud management and DevOps tool built on IaaS for cloud infrastructure and applications ...

In the current job market, all the jobs related to cloud computing, the competition is extremely fierce, such a market, can cross the professional work of it people most sought-after. Recently, the well-known Technology employment website Dice.com released a post, which listed 3800 cloud related occupations. In these thousands of occupations, researchers refine, sift, and eventually list the hottest 10 occupations in the cloud computing field. The following job descriptions, as well as certificate requirements, are mentioned repeatedly in all types of cloud related work. 1, Cloud Architect Job Description: development and implementation of cloud infrastructure to ensure system scalability, can ...

The intermediary transaction SEO diagnoses Taobao guest Cloud host technology Hall Everybody Good, I am the A5 security group Jack, today communicates with everybody about the Web server security related question. In fact, in terms of server and site security settings, although I have some experience, but there is no research, so I do this lecture today when the heart is very uncomfortable, always afraid to say wrong will be mistaken for other people's things, there are wrong places also please point out, today is all about the exchange. Perhaps you have a security master or a master of destruction to see what I said ...

The traditional It delivery model has many problems, whether from the delivery cycle or from planning to experience, there are a lot of difficult to determine the factors, many times because of some subjective or objective reasons cause project lag or miscarriage. Today to recommend the SaaS Pioneer Enterprise called Cloud technology, founder Shipeixin is to see the current enterprise IT delivery pain point, in September 13 began to build the first fully automatic and full self-service enterprise cloud service platform. It can be considered "a platform to subvert the existing enterprise IT delivery model, a community of application experience and software learning, a professional it person ...

Several articles in the series cover the deployment of Hadoop, distributed storage and computing systems, and Hadoop clusters, the Zookeeper cluster, and HBase distributed deployments. When the number of Hadoop clusters reaches 1000+, the cluster's own information will increase dramatically. Apache developed an open source data collection and analysis system, Chhuwa, to process Hadoop cluster data. Chukwa has several very attractive features: it has a clear architecture and is easy to deploy; it has a wide range of data types to be collected and is scalable; and ...

According to Google trends, "big data" is rarely used as a search term in 2011, but since the beginning of 2012, you can almost hear people in all walks of life talking about "big data". This is a very fast growing area, and it has spawned a lot of jobs. A McKinsey report predicts that by 2018 only the United States will have a gap between 140,000 and 180,000 people in the "in-depth analysis" of large data professionals. According to the new Vantage company, "Fortune" of the United States 5 ...

Apache Pig, a high-level query language for large-scale data processing, works with Hadoop to achieve a multiplier effect when processing large amounts of data, up to N times less than it is to write large-scale data processing programs in languages ​​such as Java and C ++ The same effect of the code is also small N times. Apache Pig provides a higher level of abstraction for processing large datasets, implementing a set of shell scripts for the mapreduce algorithm (framework) that handle SQL-like data-processing scripting languages ​​in Pig ...