books by subject
Linux & Unix Programming
Linux Command Line and Shell Scripting Bible
Linux - Unleashing the Workstation in Your PC
The Complete Linux Kit
Peer-to-Peer: Harnessing the Power of Disruptive Technologies
Using Linux
UNIX in a Nutshell: A Desktop Quick Reference for System V Release 4 and Solaris 7
Practical C Programming: Why Does 2+2 = 5986? (A Nutshell handbook)
POSIX.4 Programmers Guide: Programming for the Real World
Linux System Administration (New Riders Professional)
Red Hat Linux Unleashed, Third Edition
Linux Server Hacks: 100 Industrial-Strength Tips and Tools
Version Control with Subversion
Complete Idiot's Guide to Linux (Complete Idiot's Guide to (Computer))
The Cathedral & the Bazaar
In the Beginning...Was the Command Line
A Practical Guide to Linux Commands, Editors, and Shell Programming
Linux: The Complete Reference, 4th Edition (Osborne Complete Reference Series)
Multitool Linux: Practical Uses for Open Source Software
Unix and Linux Answers!: Certified Tech Support (Osborne's answers!: certified tech support)
Linux Firewalls (New Riders Professional Library)
Managing RAID on Linux: Fast, Scalable, Reliable Data Storage
Sed & Awk
Red Hat Linux System Administration Unleashed
The Linux Programming Interface: A Linux and UNIX System Programming Handbook
Eclipse IDE Pocket Guide: Using the Full-Featured Ide
Linux Command Line and Shell Scripting Bible
Linux Kernel Internals
Perl / Tk Pocket Reference: Graphical User Interfaces
Programming PHP