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| INTERNET DICTIONARY - LETTER "U" | |
| UDP | See: User Datagram Protocol |
| Universal Time Coordinated (UTC) | This is Greenwich Mean Time. [Source: MALAMUD] |
| UNIX | An operating system invented in 1969 at AT&T Bell Laboratiories that was made available to researchers and students in 1973. It was used to develop the Internet's communication software protocols. Hacker jargon definition - An interactive time-sharing system invented in 1969 by Ken Thompson after Bell Labs left the Multics project, originally so he could play games on his scavenged PDP-7. Dennis Ritchie, the inventor of C, is considered a co-author of the system. The turning point in UNIX's history came when it was reimplemented almost entirely in C during 1972--1974, making it the first source-portable operating system. UNIX subsequently underwent mutations and expansions at the hands of many different people, resulting in a uniquely flexible and developer-friendly environment. By 1991, UNIX had become the most widely used multiuser general-purpose operating system in the world. Many people consider this the most important victory yet of hackerdom over industry opposition. |
| UNIX-to-UNIX CoPy (UUCP) | This was initially a program run under the UNIX operating system that allowed one UNIX system to send files to another UNIX system via dial-up phone lines. Today, the term is more commonly used to describe the large international network which uses the UUCP protocol to pass news and electronic mail. See also: Electronic Mail, Usenet. |
| upgrade fever | The almost uncontrollable, compulsive urge to upgrade hardware and/or software, with little or no consideration extended to a real need or want. |
| upload | To copy a file from your computer to a server or host system. The reverse process of download. |
| urban legend | A story, which may have started with a grain of truth, that has been embroidered and retold until it has passed into the realm of myth. It is an interesting phenonmenon that these stories get spread so far, so fast and so often. Urban legends never die, they just end up on the Internet! Some legends that periodically make their rounds include "The Infamous Modem Tax," "Craig Shergold/Brain Tumor/Get Well Cards," and "The $250 Cookie Recipe". [Source: LAQUEY] |
| URL | URL is an acronym for Universal Resource Locator. A common method of describing an Internet service, host machine, and possibly directions to a file. URL's are used on the Web to provide links and to allow navigation to specific files and sites. Any URL consists of three parts:
A prefix to identify the type of Internet resource. If the Internet were a post office, the prefix would be the equivalent of the way you send your mail (e.g. First Class, Parcel Post, etc.) The possible prefixes are:
ftp:// indicates a File Transfer Protocol site gopher:// indicates a Gopher site http:// indicates a WWW site mailto:// allows email to be sent from a Web browser to a particular email address telnet:// opens a telnet session at a particular site news:// accesses a Usenet newsgroup wais:// indicates a Wide Area Information System site |
| Usenet | Often referred to as simply "newsgroups" is a distributed bulletin board system supported mainly by UNIX machines. Originally implemented in 1979--1980 by Steve Bellovin, Jim Ellis, Tom Truscott, and Steve Daniel at Duke University, it has swiftly grown to become international in scope and is now probably the largest decentralized information utility in existence. As of early 1993, it hosted well over 1200 newsgroups and an average of 40 megabytes (the equivalent of several thousand paper pages) of new technical articles, news, discussion, chatter, and flamage every day. Usenet groups can be "unmoderated" (anyone can post) or "moderated" (submissions are automatically directed to a moderator, who edits or filters and then posts the results). Some newsgroups have parallel mailing lists for Internet people with no netnews access, with postings to the group automatically propagated to the list and vice versa. Some moderated groups (especially those which are actually gatewayed Internet mailing lists) are distributed as `digests', with groups of postings periodically collected into a single large posting with an index. |
| User Datagram Protocol (UDP) | An Internet Standard transport layer protocol defined in STD 6, RFC 768. It is a connectionless protocol which adds a level of reliability and multiplexing to IP. See also: connectionless, Transmission Control Protocol. |
| username | The name or "handle" one uses on a network. The first part of your e-mail address or the nickname you use in a chat room. The name by which you or someone else is known by on the Internet. Used when logging into an access provider or when entering a member's only area on the Web. |
| UTC | See: Universal Time Coordinated |
| UUCODE | UUCODE for Windows - Easily encodes and decodes files. NewsXpress for Windows - Newsreader and E-mail program for encoding and decoding a-mail and newsgroup postings. Stuff-It - File expander for Windows. UULite - Encoding and Decoding for MAC. Stuff-It - File expander for MAC. |
| UUCP | See: UNIX-to-UNIX CoPy |
| UUEE | UNIX to UNIX Encode - A tool for transferring files through e-mail. |
| UUENCODE - UUDECODE | A method for converting binary information into ascii. It can be used for posting to Usenet and or e-mailing with non MIME compliant mail readers. |
