Beginning Portable Shell Scripting From Novice to Professional

About This Book
This book is about programming in the Bourne shell and its derivatives; the Korn shell, the
Bourne-­ gain shell, and the POSIX shell are among the most obvious relatives. This book does a not cover the many other UNIX and UNIX-­ ike shells, such as Plan 9’s rc, or the Berkeley csh.

It does cover a number of common UNIX commands, as well as a few somewhat less common commands, and briefly looks into some common utilities, such as sed and awk, which have historically been used heavily in shell scripting. While even further divergent things, such as AppleScript, the Tcl shell, or even graphical shells like the Mac OS X Finder, are technically shells, this book ignores them entirely, and hereafter uses the term shell to refer to the UNIX Bourne shell family.

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Building a Monitoring Infrastructure with Nagios

Build real-world, end-to-end network monitoring solutions with Nagios

This is the definitive guide to building low-cost, enterprise-strength monitoring infrastructures with Nagios, the world’s leading open source monitoring tool. Network monitoring specialist David Josephsen goes far beyond the basics, demonstrating how to use third-party tools and plug-ins to solve the specific problems in your unique environment. Josephsen introduces Nagios “from the ground up,” showing how to plan for success and leverage today’s most valuable monitoring best practices. Then, using practical examples, real directives, and working code, Josephsen presents detailed monitoring solutions for Windows, Unix, Linux, network equipment, and other platforms and devices. You’ll find thorough discussions of advanced topics, including the use of data visualization to solve complex monitoring problems. This is also the first Nagios book with comprehensive coverage of using Nagios Event Broker to transform and extend Nagios.

• Understand how Nagios works, in depth: the host and service paradigm, plug-ins, scheduling, and notification
• Configure Nagios successfully: config files, templates, timeperiods, contacts, hosts, services, escalations, dependencies, and more
• Streamline deployment with scripting templates, automated discovery, and Nagios GUI tools
• Use plug-ins and tools to systematically monitor the devices and platforms you need to monitor, the way you need to monitor them
• Establish front-ends, visual dashboards, and management interfaces with MRTG and RRDTool
• Build new C-based Nagios Event Broker (NEB) modules, one step at a time
• Contains easy-to-understand code listings in Unix shell, C, and Perl

If you’re responsible for systems monitoring infrastructure in any organization, large or small, this book will help you achieve the results you want–right from the start.

David Josephsen is Senior Systems Engineer at DBG, Inc., where he maintains a collection of geographically dispersed server farms. He has more than a decade of hands-on experience with Unix systems, routers, firewalls, and load balancers in support of complex, high-volume networks. Josephsen’s certifications include CISSP, CCNA, CCDA, and MCSE. His co-authored work on Bayesian spam filtering earned a Best Paper award at USENIX LISA 2004. He has been published in both ;login and Sysadmin magazines on topics relating to security, systems monitoring, and spam mitigation.

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Linux Command Line and Shell Scripting Bible

Linux Command Line and Shell Scripting Bible

Product Description
* Covering the most popular Linux shells (such as bash, ash, tcsh, ksh, korn, and zsh), this reference shows how to use commands to create scripts within each shell and demonstrates practical applications for shell scripts (including retrieving information from Web sites and sending automated reports via e-mail)
* For each shell, the author discusses the commands available and explains how to use these commands to create scripts that can automate common functions and reports
* Guides administrators through advanced projects for using shell scripts in real-world applications and features advanced topics such as using a database and Web programming

From the Back Cover
Learn all the command lines for all Linux shells in this one-stop guide
There's a lot to be said for going back to basics. Not only does this Bible give you a quick refresher on the structure of open-source Linux software, it also shows you how to bypass the hefty graphical user interface on Linux systems and start interacting the fast and efficient way—with command lines and automated scripts. You'll learn how to manage files on the filesystem, start and stop programs, use databases, even do Web programming—without a GUI—with this one-stop resource.

• Understand the Linux desktop and various command-line parameters
  
• Learn filesystem navigation, file handling, and the basics of bash shell commands

• Write shell scripts to automate routine functions and reports
  
• Harness nesting loops and structured commands
  
• Monitor programs, master file permissions, and make queries
  
• Run scripts in background mode and schedule jobs
  
• Use sed, gawk, and regular expressions
  
• Explore all alternate shells, including ash, tcsh, ksh, korn, and zsh
  
  

Pesquise Preço: Bondfaro

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