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U uid (user ID), 446–447 Umbrello, 287, 290 UML (Unified Modeling Language), 249, 285, 287, 289 UnicastRemoteObject class, 140 Unicode, 54, 134, 165 UNIX archive formats, 163, 217 commercial versions, 252 daemon processes, 323 filesystems, 483–485 online manuals, 29 operating system commands, 4 philosophy, 524 as programmer-friendly platform, xxi, 397 releases, 34 shell scripts, 319 standard I/O, 6, 102 tools, 5 user interface, 4 unzip, 27, 299 inspecting files before unzipping, 299 URLEncoder class, 413 URLs, 404–406 parameters in, 412–413, 436 passwords in, 329 useBean element (JSP), 435 USER environment variable, 105 UTF-8 encoding, 134
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