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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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