Thoroughly updated to account for recent developments, the second edition of this bestselling book is an in-depth, comprehensive guide to UNIX-a handbook you can use both for learning and as a ready reference. The book is written for the technically oriented UNIX user who doesn't want to wade through verbose tutorials, but isn't already an expert. Its functional organization makes it easy to find the right tool for any task, with a complete alphapbetical summary providing fast lookup of commands, options, and subcommands. The Second Edition is based on the IEEE POSX.2 Standard now widely adopted by UNIX vendors and implementors. Topics include user utilities, shells the vi editior and other standard editors, the GNU Emacs editor, Internet access tools, the awk language and the X Windows System. New topics in the second edition include the KornShell, internationalization, the World Wide Web, newsreaders, and systems administrators from the user's perspective. Background material now includes poplular new systems such as Linux and FreeBSD.