Linux in a Nutshell, now in its fourth edition, has won awards in the Linux community as the most indispensable book about Linux. It is an essential desktop reference for the commands that users of Linux utilize every day, with the depth of information and the practical, succinct "In a Nutshell" format that made the previous editions so popular. Comprehensive but concise, Linux in a Nutshell covers all substantial user, programming, administration, and networking commands for the most common Linux distributions. It's several quick references rolled into one: sed, gawk, RCS, CVS, vi, Emacs, bash, tcsh, regular expressions, package management, bootloaders, and desktop environments are all covered in this clear, to-the-point volume, along with core command-line utilities. The fourth edition continues to track the major changes in bootloaders, the GNOME and KDE desktops, and general Unix commands. Coverage has been added for GRUB, and for vim, the popular and feature-loaded extension to vi. The addition of several new options to the iptables firewall command and new commands related to DNSSEC and ssh show the book's value as a security tool.

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