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CompTIA Linux+ Study Guide: Exam XK0-004
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How Linux Works: What Every Superuser Should Know
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Practical LPIC-1 Linux Certification Study Guide
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Linux Device Driver Development Cookbook: Develop Custom Drivers ...
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The Linux Programming Interface: A Linux and UNIX System Programming ...
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Absolute FreeBSD, 3rd Edition: The Complete Guide to FreeBSD
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Absolute OpenBSD, 2nd Edition: UNIX for the Practical Paranoid
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Pro Vim
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Linux Firewalls: Attack Detection and Response
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UNIX and Linux System Administration Handbook
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