Category Archives: General

RPC

Remote Procedure Call (RPC) is an inter-process communication that allows a computer program to cause a subroutine or procedure to execute in another address space (commonly on another computer on a shared network) without the programmer explicitly coding the details for this remote interaction. That is, the programmer writes essentially the same code whether the subroutine is local to the executing program, or remote. When the software in question uses object-oriented principles, RPC is called remote invocation or remote method invocation.

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Opensource

The term open source describes practices in production and development that promote access to the end product’s source materials.Before the term open source became widely adopted, developers and producers used a variety of phrases to describe the concept; open source gained hold with the rise of the Internet.

Open-source software (OSS) is computer software that is available in source code form: the source code and certain other rights normally reserved for copyright holders are provided under a software license that permits users to study, change, improve and at times also to distribute the software.

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DOM

The Document Object Model (DOM) is a cross-platform and language-independent convention for representing and interacting with objects in HTML, XHTML and XML documents.[1] Aspects of the DOM (such as its “Elements”) may be addressed and manipulated within the syntax of the programming language in use. The public interface of a DOM is specified in its application programming interface (API).

Following are the valid DOM save methods

A. save()
B. saveXML()
C. saveHTML()
D. saveHTMLFile()

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Benefits and drawbacks – Rewrite engine

  • The links are “cleaner” and more descriptive, improving their “friendliness” to both users and search engines.
  • They prevent undesired “inline linking”, which can waste bandwidth.
  • They hide the inner workings of a web site’s address to visitors, which can prevent them from discovering query strings that could compromise the site.
  • The site can continue to use the same URLs even if the underlying technology used to serve them is changed (for example, switching to a new blogging engine).
  • There can, however be drawbacks as well; if a user wants to modify a URL to retrieve new data, the rewrite engine may hinder the construction of custom queries due to the lack of named variables.
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Rewrite engine

A rewrite engine is software that modifies a web URL’s appearance (URL rewriting). Rewritten URLs (sometimes known as short, fancy URLs, or search engine friendly – SEF) are used to provide shorter and more relevant-looking links to web pages. The technique adds a degree of separation between the files used to generate a web page and the URL that is presented to the World.

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Hotlinking

Hotlinking (also known as Inline linking, leeching, piggy-backing, direct linking, offsite image grabs, bandwidth theft) is the use of a linked object, often an image, from one site by a web page belonging to a second site. The second site is said to have an inline link to the site where the object is located.

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Website builder

Website builders are tools that allow the construction of websites without manual code editing. They fall into two categories: on-line proprietary tools provided by web hosting companies, typically intended for users to build their private site; and software which runs on a computer, creating pages off-line and which can then publish these pages on any host. (The latter are often considered to be “website design software” rather than “website builders”.)

Online website builders

Yola (webhost)
uCoz
Jimdo
Moonfruit
Squarespace
Weebly
Doomby
Webnode
Webs
Wix
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What is .vm file?

VM file is a Velocity Macro File. Apache Velocity is a Java-based template engine that provides a simple yet powerful template language to reference objects defined in Java code.

Velocity macro files (VM) are Velocity`s templates, they are html files with variables that are substituted by Velocity.

 

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command to list files in dos

dir – Lists all files and directories in the directory that you are currently in.
dir /p – It will display all files one page at a time.
dir /w- You can use this command to list just the files and directories going horizontally
dir /s /w /p – Llist all the files and directories in the current directory and the sub directories after that, in one
dir /s –   Lists the files in the directory that you are in and all sub directories after that directory
dir *.exe – The above command lists any file that ends with .exe.
dir >file.txt -Takes the output of dir and store  it to the file file.txt
dir /s |find “i” |more – List all directories, one screen page at a time, and see the number of files in each directory and the amount of space each occupies.
dir /ad  – List only the directories in the current directory.
page at a time.
dir /on-List the files in alphabetical order
dir /o-n- List the files in reverse alphabetical order.
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