Linux Troubleshooting for System Administrators and Power Users

Preface xvii Chapter 1 System Boot, Startup, and Shutdown Issues 1 Chapter 2 System Hangs and Panics 51 Chapter 3 Performance Tools 79 Chapter 4 Performance 107 Chapter 5 Adding New Storage via SAN with Reference to PCMCIA and USB 159 Chapter 6 Disk Partitions and Filesystems 185 Chapter 7 Device Failure and Replacement 229 Chapter 8 Linux Processes: Structures, Hangs, and Core Dumps 253 Chapter 9 Backup/Recovery 285 Chapter 10 cron and at 315 Chapter 11 Printing and Printers 345 Chapter 12 System Security 383 Chapter 13 Network Problems 423 Chapter 14 Login Problems 495 Chapter 15 X Windows Problems 527 Index 551

James Kirkland is a Senior Consultant for Racemi. He was previously a Senior Systems Administrator at Hewlett-Packard. He has been working with UNIX variants for more than ten years. James is a Red Hat Certified engineer, Linux LPIC level one certified, and an HP-UX certified System Administrator. He has been working with Linux for seven years and HP-UX for eight years. He has been a participant at HP World, Linux World, and numerous internal HP forums. David Carmichael works for Hewlett-Packard as a Technical Problem Manager in Alpharetta, Georgia. He earned a bachelors degree in computer science from West Virginia University in 1987 and has been helping customers resolve their IT problems ever since. David has written articles for HP's IT Resource Center (http://itrc.hp.com) and presented at HP World 2003. Chris Tinker and Greg Tinker are twin brothers originally from LaFayette, Georgia. Chris began his career in computers while working as a UNIX System Administrator for Lockheed Martin in Marietta, Georgia. Greg began his career while at Bellsouth in Atlanta, Georgia. Both Chris and Greg joined Hewlett-Packard in 1999. Chris's primary role at HP is as a Senior Software Business Recovery Specialist and Greg's primary role is as a Storage Business Recovery Specialist. Both Chris and Greg have participated in HP World, taught several classes in UNIX/Linux and Disk Array technology, and obtained various certifications including certifications in Advanced Clusters, SAN, and Linux. Chris resides with his wife, Bonnie, and Greg resides with his wife, Kristen, in Alpharetta, Georgia.