Web - Site Advantages...........

If you are constructing a Web site, then I hope you are aware of its advantages as well. Still I'm listing out few more if you are not aware.

Business is open 24x7 :

This means that once you put your business onsite then your business is open 7 days a week and 365 days a year. Even if you are in different locations of the world then you will be able to server your customers on 24x7 Hours basis.

Increased Customer Base:

Because anyone in the world can see your web site so you will gain customers from other states and countries while you are putting in the same amount of effort and money.

Tremendous Cost Saving :

This is one of the biggest advantages of having a business online. You do not need to keep a big man power and lot of resources to maintain a business on site. There are many other cost saving opportunities while keeping business online. Think of how many cards you mail out to let customers know about your sale. All of that can be eliminated by putting the sale information on your web site and inviting your customers to visit it.

Advertising Opportunities:

Apart from saving your advertising cost you have additional opportunities to run advertisements from other companies and start making money. If you ever advertised in a local newspaper, you know the costs. You are being charged per line, per inch, and per color. On the Web, there is no limit to how much you can put. So whenever there is new product or service then you can advertise it in better way.

Creates a Brand Image:

Internet is a great medium through which you can create any image of yourself you want. It is all in your hands: design a professional web site, add helpful content, and your company will immediately take a step up in the image it represents. No matter how small your business is, with the right tools and a great desire you can make it look like a corporation on the Web.

Customer Satisfaction:

If you have a really good site online then you can give your customer a lot of satisfaction in terms of customer care. You can keep online help, FAQ, and other important information which is useful for your customers. You can create online forums for open discussion and you can conduct customer survey to take customer feedback etc.

Showcase your work:

Whether you are a real estate agent, construction business owner or a beauty salon specialist - you can put your work on display when you have a web site. Anytime a potential client wants to see your past work and projects, simply refer him or her to your site. No need to scan and mail pictures, or bring your client to a finished building project.

If you are planning to maintain a Web site then I'm listing few basic skills which you will require to build and maintain a Web site. This list may go to infinite because today there are numerous technologies available and many are coming everyday. So you have to plan and affirm on any one of the available technologies and go ahead for your project.

This is not required that you should have knowledge of all the listed skills. If you want to develop a simple Web site then you would needs just first four skills listed here. Rest of the skills are required if you want to go for a bigger and more interactive Web site.

Posted by Editorial Team on 03:04 in

Web - Basic Concepts............

What is Internet?

The Internet is essentially a global network of computing resources. You can think about the Internet as a physical collection of routers and circuits as a set of shared resources or even as an attitude about interconnecting and intercommunication. Some common definitions given in the past include:

• A network of networks based on the TCP/IP communications protocol.
• A community of people who use and develop those networks.
• A community of people who use and develop those networks.

Internet Based Services:

Some of the basic services available to Internet users are:

• Email: A fast, easy, and inexpensive way to communicate with other Internet users around the world.
• Telnet: Allows a user to log into a remote computer as though it were a local system.
• FTP: Allows a user to transfer virtually every kind of file that can be stored on a computer from one Internet-connected computer to another.
• Usenetnews: A distributed bulletin board that offers a combination news and discussion service on thousands of topics.
• World Wide Web (WWW): A hypertext interface to Internet information resources.

What is WWW?

This stands for World Wide Web. A technical definition of the World Wide Web is : all the resources and users on the Internet that are using the Hypertext Transfer Protocol (HTTP).

A broader definition comes from the organization that Web inventor Tim Berners-Lee helped found, the World Wide Web Consortium (W3C):

The World Wide Web is the universe of network-accessible information, an embodiment of human knowledge.

In simple terms, The World Wide Web is a way of exchanging information between computers on the Internet, tying them together into a vast collection of interactive multimedia resources.

What is HTTP?

This stands for HyperText Transfer Protocol. This is the protocol being used to transfer hypertext documents thats makes the World World Wide possible.

A standard web address such as http://www.yahoo.com/ is called a URL and here the prefix httpindicates its protocol

What is URL?

URL stands for Uniform Resource Locator, and is used to specify addresses on the World Wide Web. A URL is the fundamental network identification for any resource connected to the web (e.g., hypertext pages, images, and sound files).

A URL will have the following format:

protocol://hostname/other_information

The protocol specifies how information from the link is transferred. The protocol used for web resources is HyperText Transfer Protocol (HTTP). Other protocols compatible with most web browsers include FTP, telnet, newsgroups, and Gopher.

The protocol is followed by a colon, two slashes, and then the domain name. The domain name is the computer on which the resource is located.

Links to particular files or subdirectories may be further specified after the domain name. The directory names are separated by single forward slashes.

What is Website?

Currently you are on our website http://www.tutorialspoint.com which is a collection of various pages written in HTML markup language. This is a location on the web where people can find tutorials on latest technologies. Similar way there are millions of websites available on the web.

Each page available on the Website is called a web page and first page of any web site is called home page for that site.

What is Web Server?

Every Web site sits on a computer known as a Web server. This server is always connected to the internet. Every Web server that is connected to the Internet is given a unique address made up of a series of four numbers between 0 and 256 separated by periods.for example, 68.178.157.132 ro 68.122.35.127.

When you register a Web address, also known as a domain name, such as tutorialspoint.com you have to specify the IP address of the Web server that will host the site.

We will see different type of Web servers in a separate chapter.

What is Web Browser?

Web Browsers are software installed on your PC. To access the Web you need a web browsers, such as Netscape Navigator, Microsoft Internet Explorer or Mozilla Firefox.

Currently you must be using any sort of Web browser while you are naviating through my site tutorialspoint.com. On the Web, when you navigate through pages of information this is commonly known as browsing or surfing.

We will see different type of Web browsers in a separate chapter.

What is SMTP Server?

This stands for Simple Mail Transfer Protocol Server. This server takes care of delivering emails from one server to another server. When you send an email to an email address, it is delivered to its recipient by a SMTP Server.

What is ISP?

This stands for Internet Service Provider. They are the companies who provide you service in terms of internet connection to connect to the internet.

You will buy space on a Web Server from any Internet Service Provider. This space will be used to host your Web site.

What is HTML?

This stands for HyperText Markup Language. This is the language in which we write web pages for any Website. Even the page you are reading right now is written in HTML.

This is a subset of Standard Generalized Mark-Up Language (SGML) for electronic publishing, the specific standard used for the World Wide Web.

What is Hyperlink?

A hyperlink or simply a link is a selectable element in an electronic document that serves as an access point to other electronic resources. Typically, you click the hyperlink to access the linked resource. Familiar hyperlinks include buttons, icons, image maps, and clickable text links.

What is DNS ?

DNS stands for Domain Name System. When someone types in your domain name, www.example.com, your browser will ask the Domain Name System to find the IP that hosts your site. When you register your domain name, your IP address should be put in a DNS along with your domain name. Without doing it your domain name will not be functioning properly.

What is W3C?

This stands for World Wide Web Consortium which is an international consortium of companies involved with the Internet and the Web.

The W3C was founded in 1994 by Tim Berners-Lee, the original architect of the World Wide Web. The organization's purpose is to develop open standards so that the Web evolves in a single direction rather than being splintered among competing factions. The W3C is the chief standards body for HTTP and HTML.

Web Browsers are software installed on your PC. To access the Web you need a web browsers, such as Netscape Navigator, Microsoft Internet Explorer or Mozilla Firefox.

Currently you must be using any sort of Web browser while you are navigating through my site tutorialspoint.com. On the Web, when you navigate through pages of information this is commonly known as web browsing or web surfing.

There are four leading web browsers: Explorer, FireFox, Netscape and Safari but there are many others browsers available.You might be interested in knowing Complete Browser Statistics. Now we will see these browsers in bit more detail.

While developing a site, we should try to make it compatible to as many browsers as possible. Specially site should be compatible to major browsers like Explorer, FireFox, Netscape, Opera and Safari.

Internet Explorer Internet Explorer (IE) is a product from software giant Microsoft. This is the most commonly used browser in the universe. This was introduced in 1995 along with Windows 95 launch and it has passed Netscape popularity in 1998. You can download latest version of this browser from Miscrosoft site Download Internet Explorer

Netscape Netscape is one of the original Web browsers. This is what Microsoft designed Internet Explorer to compete against. Netscape and IE comprise the major portion of the browser market. Netscape was introduced in 1994. You can download latest copy of this browser from Download Netscape

Mozilla Mozilla is an open-source Web browser, designed for standards compliance, performance and portability. The development and testing of the browser is coordinated by providing discussion forums, software engineering tools, releases and bug tracking. Browsers based on Mozilla code is the second largest browser family on the Internet today, representing about 30% of the Internet community. You can download latest copy of this browser from Download Mozilla

Konqueror Konqueror is an Open Source web browser with HTML 4.01 compliance, supporting Java applets, JavaScript, CSS 1, CSS 2.1, as well as Netscape plugins. This works as a file manager as wellIt supports basic file management on local UNIX filesystems, from simple cut/copy and paste operations to advanced remote and local network file browsing. You can download latest copy of this browser from Download Konqueror

Firefox Firefox is a new browser derived from Mozilla. It was released in 2004 and has grown to be the second most popular browser on the Internet. You can download a latest version of this browser from Download Firefox

Safari Safari is a web browser developed by Apple Inc. and included in Mac OS X. It was first released as a public beta in January 2003. Safari has very good support for latest technologies like XHTML, CSS2 etc. You can download a latest version of this browser from Download Safari

Opera Opera is smaller and faster than most other browsers, yet it is full- featured. Fast, user-friendly, with keyboard interface, multiple windows, zoom functions, and more. Java and non Java-enabled versions available. Ideal for newcomers to the Internet, school children, handicap and as a front-end for CD-Rom and kiosks. You can download a latest version of this browser from Download Opera

Lynx Lynx is a fully-featured World Wide Web browser for users on Unix, VMS, and other platforms running cursor-addressable, character-cell terminals or emulators. You can download a latest version of this browser from Download Lynx Web Browsers are software installed on your PC. To access the Web you need a web browsers, such as Netscape Navigator, Microsoft Internet Explorer or Mozilla Firefox. Currently you must be using any sort of Web browser while you are navigating through my site tutorialspoint.com. On the Web, when you navigate through pages of information this is commonly known as web browsing or web surfing. There are four leading web browsers: Explorer, FireFox, Netscape and Safari but there are many others browsers available.You might be interested in knowing Complete Browser Statistics. Now we will see these browsers in bit more detail. While developing a site, we should try to make it compatible to as many browsers as possible. Specially site should be compatible to major browsers like Explorer, FireFox, Netscape, Opera and Safari. Internet Explorer Internet Explorer (IE) is a product from software giant Microsoft. This is the most commonly used browser in the universe. This was introduced in 1995 along with Windows 95 launch and it has passed Netscape popularity in 1998. You can download latest version of this browser from Miscrosoft site Download Internet Explorer Netscape Netscape is one of the original Web browsers. This is what Microsoft designed Internet Explorer to compete against. Netscape and IE comprise the major portion of the browser market. Netscape was introduced in 1994. You can download latest copy of this browser from Download Netscape Mozilla Mozilla is an open-source Web browser, designed for standards compliance, performance and portability. The development and testing of the browser is coordinated by providing discussion forums, software engineering tools, releases and bug tracking. Browsers based on Mozilla code is the second largest browser family on the Internet today, representing about 30% of the Internet community. You can download latest copy of this browser from Download Mozilla Konqueror Konqueror is an Open Source web browser with HTML 4.01 compliance, supporting Java applets, JavaScript, CSS 1, CSS 2.1, as well as Netscape plugins. This works as a file manager as wellIt supports basic file management on local UNIX filesystems, from simple cut/copy and paste operations to advanced remote and local network file browsing. You can download latest copy of this browser from Download Konqueror Firefox Firefox is a new browser derived from Mozilla. It was released in 2004 and has grown to be the second most popular browser on the Internet. You can download a latest version of this browser from Download Firefox Safari Safari is a web browser developed by Apple Inc. and included in Mac OS X. It was first released as a public beta in January 2003. Safari has very good support for latest technologies like XHTML, CSS2 etc. You can download a latest version of this browser from Download Safari Opera Opera is smaller and faster than most other browsers, yet it is full- featured. Fast, user-friendly, with keyboard interface, multiple windows, zoom functions, and more. Java and non Java-enabled versions available. Ideal for newcomers to the Internet, school children, handicap and as a front-end for CD-Rom and kiosks. You can download a latest version of this browser from Download Opera Lynx Lynx is a fully-featured World Wide Web browser for users on Unix, VMS, and other platforms running cursor-addressable, character-cell terminals or emulators. You can download a latest version of this browser from Download Lynx Every Web site sits on a computer known as a Web server. This server is always connected to the internet. Every Web server that is connected to the Internet is given a unique address made up of a series of four numbers between 0 and 255 separated by periods.for example, 68.178.157.132 or 68.122.35.127. When you register a Web address, also known as a domain name, such as tutorialspoint.com you have to specify the IP address of the Web server that will host the site. You can load up with Dedicated Servers that can support your web-based operations. There are four leading web browsers: Apache, IIS, lighttpd and Jagsaw. Now we will see these servers in bit more detail. Apart from these Web Servers, there are other Web Servers also available in the market but they are very expansive. Major ones are Netscape's iPlanet, Bea's Web Logic and IBM's Websphere. Apache HTTP Server This is the most popular web server in the world developed by the Apache Software Foundation. Apache web server is an open source software and can be installed on almost all operating systems including Linux, Unix, Windows, FreeBSD, Mac OS X and more. About 60% of the web server machines run the Apache Web Server. You can have Apache with tomcat module to have JSP and J2EE related support. You can have detailed information about this server at Apache HTTP Server Internet Information Services The Internet Information Server (IIS) is a high performance Web Server from Microsoft. This web server runs on Windows NT/2000 and 2003 platforms ( and may be on upcoming new Windows version also). IIS comes bundled with Windows NT/2000 and 2003; Because IIS is tightly integrated with the operating system so it is relatively easy to administer it. You can have detailed information about this server at Miscrosoft IIS lighttpd The lighttpd, pronounced lighty is also a free web server that is distributed with the FreeBSD operating system. This open source web server is fast, secure and consumes much less CPU power. Lighttpd can also run on Windows, Mac OS X, Linux and Solaris operating systems. You can have detailed information about this server at lighttpd Sun Java System Web Server This web server from Sun Microsystems is suited for medium and large web sites. Though the server is free it is not open source. It however, runs on Windows, Linux and Unix platforms. The Sun Java System web server supports various languages, scripts and technologies required for Web 2.0 such as JSP, Java Servlets, PHP, Perl, Python, Ruby on Rails, ASP and Coldfusion etc. You can have detailed information about this server at Sun Java System Web Server Jigsaw Server Jigsaw (W3C's Server) comes from the World Wide Web Consortium. It is open source and free and can run on various platforms like Linux, Unix, Windows, Mac OS X Free BSD etc. Jigsaw has been written in Java and can run CGI scripts and PHP programs. You can have detailed information about this server at Jigsaw Server

Posted by Editorial Team on 02:12 in

UNIX COMMANDS WITH EXAMPLES.......

Ten ESSENTIAL UNIX Commands

These are ten commands that you really need to know in order to get started with UNIX. They are probably similar to commands you already know for another operating system. 

Command	Example	Description
1.     ls	ls ls -alF	Lists files in current directory List in long format
2.     cd	cd tempdir cd .. cd ~dhyatt/web-docs	Change directory to tempdir Move back one directory Move into dhyatt's web-docs directory
3.     mkdir	mkdir graphics	Make a directory called graphics
4.     rmdir	rmdir emptydir	Remove directory (must be empty)
5.     cp	cp file1 web-docs cp file1 file1.bak	Copy file into directory Make backup of file1
6.     rm	rm file1.bak rm *.tmp	Remove or delete file Remove all file
7.     mv	mv old.html new.html	Move or rename files
8.     more	more index.html	Look at file, one page at a time
9.     lpr	lpr index.html	Send file to printer
10.   man	man ls	Online manual (help) about command

Ten VALUABLE UNIX Commands

Once you have mastered the basic UNIX commands, these will be quite valuable in managing your own account. 

Command	Example	Description
1.     grep <str><files>	grep "bad word" *	Find which files contain a certain word
2.     chmod <opt> <file>	chmod 644 *.html chmod 755 file.exe	Change file permissions read only Change file permissions to executable
3.     passwd	passwd	Change passwd
4.     ps <opt>	ps aux ps aux   |   grep dhyatt	List all running processes by #ID List process #ID's running by dhyatt
5.     kill <opt> <ID>	kill -9 8453	Kill process with ID #8453
6.     gcc (g++) <source>	gcc file.c -o file g++ fil2.cpp -o fil2	Compile a program written in C Compile a program written in C++
7.     gzip <file>	gzip bigfile gunzip bigfile.gz	Compress file Uncompress file
8.     mail         (pine)	mail me@tjhsst.edu < file1 pine	Send file1 by email to someone Read mail using pine
9.     telnet <host>         ssh <host>	telnet vortex.tjhsst.edu ssh -l dhyatt jazz.tjhsst.edu	Open a connection to vortex Open a secure connection to jazz as user dhyatt
10.   ftp <host> ncftp <host/directory>	ftp station1.tjhsst.edu ncftp metalab.unc.edu	Upload or Download files to station1 Connect to archives at UNC

Ten FUN UNIX Commands

These are ten commands that you might find interesting or amusing. They are actually quite helpful at times, and should not be considered idle entertainment. 

Command	Example	Description
1.     who	who	Lists who is logged on your machine
2.     finger	finger	Lists who is on computers in the lab
3.     ytalk <user@place>	ytalk dhyatt@threat	Talk online with dhyatt who is on threat
4.     history	history	Lists commands you've done recently
5.     fortune	fortune	Print random humerous message
6.     date	date	Print out current date
7.     cal <mo> <yr>	cal 9 2000	Print calendar for September 2000
8.     xeyes	xeyes &	Keep track of cursor (in "background")
9.     xcalc	xcalc &	Calculator ("background" process)
10.   mpage <opt> <file>	mpage -8 file1   |  lpr	Print 8 pages on a single sheet and send to printer (the font will be small!)

Ten HELPFUL UNIX Commands

These ten commands are very helpful, especially with graphics and word processing type applications. 

Command	Example	Description
1.     netscape	netscape &	Run Netscape browser
2.     xv	xv &	Run graphics file converter
3.     xfig / xpaint	xfig & (xpaint &)	Run drawing program
4.     gimp	gimp &	Run photoshop type program
5.     ispell <fname>	ispell file1	Spell check file1
6.     latex <fname>	latex file.tex	Run LaTeX, a scientific document tool
7.     xemacs / pico	xemacs (or pico)	Different editors
8.     soffice	soffice &	Run StarOffice, a full word processor
9.     m-tools (mdir, mcopy,         mdel, mformat, etc. )	mdir a: mcopy file1   a:	DOS commands from UNIX (dir A:) Copy file1 to A:
10.   gnuplot	gnuplot	Plot data graphically

Ten USEFUL UNIX Commands:

These ten commands are useful for monitoring system access, or simplifying your own environment. 

Command	Example	Description
1.     df	df	See how much free disk space
2.     du	du -b subdir	Estimate disk usage of directory in Bytes
3.     alias	alias lls="ls -alF"	Create new command "lls" for long format of ls
4.     xhost	xhost + threat.tjhsst.edu xhost -	Permit window to display from x-window program from threat Allow no x-window access from other systems
5.     fold	fold -s file1   |   lpr	Fold or break long lines at 60 characters and send to printer
6.     tar	tar -cf subdir.tar subdir tar -xvf subdir.tar	Create an archive called subdir.tar of a directory Extract files from an archive file
7.     ghostview (gv)	gv filename.ps	View a Postscript file
8.     ping    (traceroute)	ping threat.tjhsst.edu traceroute www.yahoo.com	See if machine is alive Print data path to a machine
9.     top	top	Print system usage and top resource hogs
10.   logout (exit)	logout or exit	How to quit a UNIX shell.

Posted by Editorial Team on 01:57 in

Html Basic material.....

What is HTML5?

HTML5 will be the new standard for HTML.

The previous version of HTML, HTML 4.01, came in 1999. The internet has changed significantly since then.

HTML5 is intended to subsume not only HTML 4, but also XHTML 1 and DOM Level 2 HTML.

HTML5 is designed to deliver almost everything you want to do online without requiring additional plugins. It does everything from animation to apps, music to movies, and can also be used to build complicated applications that run in your browser.

HTML5 is also cross-platform (it does not care whether you are using a tablet or a smartphone, a netbook, notebook or a Smart TV).

HTML5 can also be used to write web applications that still work when you are not online.

The HTML 5 working group includes AOL, Apple, Google, IBM, Microsoft, Mozilla, Nokia, Opera, and hundreds of other vendors.

HTML5 is still a work in progress. However, all major browsers support many of the new HTML5 elements and APIs.

Posted by Editorial Team on 01:36 in material

Hi

Hi visitors.......


This our New Blog For Learning all courses online
it's a part of  E-hacking4all.blogspot.in

Posted by Editorial Team on 00:28 in