Showing headlines posted by sde

Individuals wanting to learn and develop their understanding of the Perl programming language have a huge selection of books to choose from. There are hundreds of enlightening Perl books that are available to purchase at reasonable cost. However, given that Perl is an open source programming language, with an eclectic heritage written by Larry Wall and a cast of thousands, it is satisfying to see that some authors have made their Perl publications available to download without charge, and released under a freely distributable license.

Ruby is a general purpose, structured, flexible, fully object-oriented programming language. It features a fully dynamic type system, which means that the majority of its type checking is performed at run-time rather than at compilation. This stops programmers having to overly worry about integer and string types. Ruby has automatic memory management. The language shares many similar traits with Python, Perl, Lisp, and Smalltalk.

The focus of this article is to select some of the finest Python books which are available to download for free. The vast majority of the books featured here can also be freely distributed to others.

A web server is computer software that delivers web pages on request to clients using the Hypertext Transfer Protocol (HTTP). It serves the files that form web pages to web users; the content is in the form of HTML documents, images, style sheets, and scripts.

Most components of a web application produce operational log files. Some logs are written by each application in a unique format. Other components generate out-of-the-box logs. Monitoring system logs is an essential activity for anyone charged with taking decisions. System administrators need to monitor logs to look out for unusual activity, to troubleshoot applications and websites that are under their control. By scanning logs, extracting and correlating data, system administrators can investigate and resolve problems, carry out capacity planning, help to detect vulnerabilities, ensure the smooth running of services and balancing capacity, and establish who has used services and when.

Disk partitioning is the means of dividing a hard disk drive into multiple logical storage units referred to as partitions. A partition is a contiguous set of blocks on a drive that are treated as an independent disk.

Mobile application development is the process by which software is created for handheld devices. This article focuses on tools which help developers create applications for mobile phones. The purpose of application frameworks and libraries is to enable developers to spend their time on the creative and interesting part of development, alleviating the repetitive overhead associated with common development patterns.

A podcast is a form of digital media consisting of an episodic program downloaded or streamed over the Internet using an XML protocol called RSS. Podcast episodes can be audio radio, video files, PDFs, or ePub files. These episodes can be viewed and listened to on a number of different devices including computers, portable media players, and smartphones.

Two of the most popular control panels are Plesk and cPanel. These are web-based graphical control panels that allow you to easily and intuitively administer websites, DNS, e-mail accounts, SSL certificates and databases. However, they are both proprietary software. Hosting providers will charge a monthly fee for these control panels to be installed on a server. Fortunately, there is a wide range of open source software available to download at no cost that offers a real alternative to these proprietary solutions.

Web server benchmarking is a way of determining the performance of a web server with the aim of establishing how well it copes under a sufficiently high workload. Performance testing is important to help maintain continuous system performance.

Computer classes in the UK have been constrained by the national curriculum for ICT, with students having to limit their computing activities to learning applications such as Word and PowerPoint, and using the internet to help with their school work. However, learning how to use Microsoft Office is often of little or no interest to students. Students are motivated by interactive activities such as programming, as they like to make things to find out how they work.

RAW files are not directly usable, but have all the necessary information to create an image. RAW files usually offer higher color depth, higher dynamic range, and preserve most of the information of the image compared with the final image format. The downside of RAW files is that they take up far more storage space. Dynamic range in photography describes the ratio between the maximum and minimum measurable light intensities (white and black, respectively).

Word processors are a general application software that are perfect for constructing business documents, letters, batch mailings using templates, etc. However, many word processors are too obtrusive and distracting for writers. What is needed is software that helps concentrate on the content of the novel, sketch out the chapters and scenes, work out the best structure, import research, add locations, characters and objects.

The electronic design market has witnessed rapid expansion in recent years, with the market becoming increasingly more global. With the rise of semiconductor industries in many emerging countries, such as China, good quality EDA software is in strong demand.

Professional astronomers are in a very fortunate profession. They have the opportunity to continue their love of astronomy, travel the world, make significant discoveries, and get paid at the same time.

Business intelligence software continues to be a hot market in this difficult economic climate. This type of software takes a company's raw data from its databases and turns it into signposts and mappings that helps firms make better business decision-making with the objective of generating additional revenue.

Internet Relay Chat (IRC) is an essential way of engaging with the Linux community. Being able to tap into the wealth of knowledge of individuals logged into IRC enables users to engage directly with developers and other users of distributions and applications. IRC is not just limited to obtaining and giving technical support to others; it can be used for many other activities.

Console based applications are light on system resources (very useful on low specified machines), can be faster and more efficient than their graphical counterparts, they do not stop working when X Windows is restarted, and are great for scripting purposes. When designed well, console applications offer a surprisingly powerful way of using a computer effectively. The applications are leaner, faster, easier to maintain, and remove the need to have installed a whole gamut of libraries.

It is unquestionably the case that only a small percentage of Linux users would be truly satisfied not having access to a graphical user interface. The graphical desktop environment has become so ingrained in almost everyone's computer activities. Nevertheless, even in 2012 there are many reasons why console based applications have an important part to play.

Network monitoring tools can help to identify issues before they escalate to emergency status. This type of software is not only useful for network administrators. Home users with a small network or even just a single computer will benefit from the software featured in this article.