What are URLs What are URLs What are URLs excerpted from a series of _____________ WWW overviews by Florian Eggenberger One of the most powerful aspects of the World-Wide Web is that it allows to access nearly any kind of data and network service. In order to locate such object on the Internet, the Web uses Uniform Resource Locators (URLs). URLs specify the access method, the address of the host computer, the port to connect to, and the path and name of the object. The format is: access method://host.domain/path/objectname Examples may look like this: http://test.unibas.ch:80/ provides access to a WWW server on port 80 ftp://guru.cern.ch/ provides access to an anonymous ftp server gopher://gopher.beta.test.unibas.ch/ provides access to a gopher server news:embnet.net-dev provides access to a news server (Note the absence of "//") telnet://test.unibas.ch opens an interactive telnet session file://test.unibas.ch/file.txt retrieves a text file from a remote machine file://localhost/device1/document.txt opens a text file or WWW document on device1 of a local UNIX or VMS system (Note that some browsers require the file suffix "html" to recognize a WWW document) file:///disk1/document opens a text file or a WWW document on disk1 of a local Mac (Note the use of "///") file:///C|/document.txt opens a text file or a WWW document on drive C: of a local DOS machine (Note the use of "///" and "|") WWW browsers let you specify URLs either directly or by selecting hypertext in the WWW document you are presented with. This will cause the browser to send a request to open the URL specified. Selecting hypertext in a WWW document will take you to related information, which may also have pointers to related information. So don't worry if you don't know the URL of the information you want, simply follow the logical chain of hypertext links to get the information.