Python for Unix and Linux System Administration by Gift, Noah -- Read -- Imperial Library of Trantor

Index

Python for Unix and Linux System Administration

A Note Regarding Supplemental Files Foreword Preface

Conventions Used in This Book Using Code Examples Safari® Books Online How to Contact Us Acknowledgments

Noah’s Acknowledgments Jeremy’s Acknowledgments

1. Introduction

Why Python? Motivation The Basics Executing Statements in Python

Summary

Using Functions in Python Reusing Code with the Import Statement

2. IPython

Installing IPython Basic Concepts

Interacting with IPython Tab Completion Magic Edit Configuring IPython

Help with Magic Functions Unix Shell

alias Shell Execute rehash rehashx cd bookmark dhist pwd Variable Expansion String Processing sh Profile

Information Gathering

page pdef pdoc pfile pinfo psource psearch who who_ls whos History

Readline support hist command History results

Automation and Shortcuts

alias macro store reset run save rep

Summary

3. Text

Python Built-ins and Modules

str

Creating strings Built-in methods for str data extraction Unicode strings

re Apache Config File Hacking Working with Files

Creating files Reading files Writing files Additional resources

Standard Input and Output StringIO urllib

Log Parsing ElementTree Summary

4. Documentation and Reporting

Automated Information Gathering

Receiving Email

Manual Information Gathering Information Formatting

Graphical Images PDFs

Information Distribution

Sending Email

Sending basic messages Using SMTP authentication Sending attachments with Python

Trac

Summary

5. Networking

Network Clients

socket httplib ftplib urllib urllib2

Remote Procedure Call Facilities

XML-RPC Pyro

SSH Twisted Scapy Creating Scripts with Scapy

6. Data

Introduction Using the OS Module to Interact with Data Copying, Moving, Renaming, and Deleting Data Working with Paths, Directories, and Files Comparing Data

Using the filecmp Module

Using os.list

Merging Data

MD5 Checksum Comparisons

Pattern Matching Files and Directories Wrapping Up rsync Metadata: Data About Data Archiving, Compressing, Imaging, and Restoring Using tarfile Module to Create TAR Archives Using a tarfile Module to Examine the Contents of TAR Files

7. SNMP

Introduction Brief Introduction to SNMP

SNMP Overview SNMP Installation and Configuration

IPython and Net-SNMP Discovering a Data Center Retrieving Multiple-Values with Net-SNMP

Finding Memory

Creating Hybrid SNMP Tools Extending Net-SNMP SNMP Device Control Enterprise SNMP Integration with Zenoss

Zenoss API

Using Zendmd Device API

8. OS Soup

Introduction Cross-Platform Unix Programming in Python

Using SSH Keys, NFS-Mounted Source Directory, and Cross-Platform Python to Manage Systems Creating a Cross-Platform, Systems Management Tool Creating a Cross-Platform Build Network

PyInotify OS X

Scripting DSCL or Directory Services Utility OS X Scripting APIs Automatically Re-Imaging Machines Managing Plist Files from Python

Red Hat Linux Systems Administration Ubuntu Administration Solaris Systems Administration Virtualization

VMware

Cloud Computing

Amazon Web Services with Boto Google App Engine

Building a sample Google App Engine application

Using Zenoss to Manage Windows Servers from Linux

9. Package Management

Introduction Setuptools and Python Eggs Using easy_install easy_install Advanced Features

Search for Packages on a Web Page Install Source Distribution from URL Install Egg Located on Local or Network Filesystem Upgrading Packages Install an Unpacked Source Distribution in Current Working Directory Extract Source Distribution to Specified Directory Change Active Version of Package Changing Standalone .py File into egg Authenticating to a Password Protected Site Using Configuration Files Easy Install Advanced Features Summary

Creating Eggs Entry Points and Console Scripts Registering a Package with the Python Package Index

Where Can I Learn More About …

Distutils Buildout Using Buildout Developing with Buildout virtualenv

Creating a Custom Bootstrapped Virtual Environment

EPM Package Manager

EPM Package Manager Requirements and Installation Creating a Hello World Command-Line Tool to Distribute Creating Platform-Specific Packages with EPM Making the Package EPM Summary: It Really Is That Easy

10. Processes and Concurrency

Introduction Subprocess

Using Return Codes with Subprocess

Using Supervisor to Manage Processes Using Screen to Manage Processes Threads in Python

Timed Delay of Threads with threading.Timer Threaded Event Handler

Processes Processing Module Scheduling Python Processes daemonizer Summary

11. Building GUIs

GUI Building Theory Building a Simple PyGTK App Building an Apache Log Viewer Using PyGTK Building an Apache Log Viewer Using Curses Web Applications Django

Apache Log Viewer Application Simple Database Application

Conclusion

12. Data Persistence

Simple Serialization

Pickle cPickle shelve YAML ZODB

Relational Serialization

SQLite Storm ORM SQLAlchemy ORM

Summary

13. Command Line

Introduction Basic Standard Input Usage Introduction to Optparse Simple Optparse Usage Patterns

No Options Usage Pattern True/False Usage Pattern Counting Options Usage Pattern Choices Usage Pattern Option with Multiple Arguments Usage Pattern

Unix Mashups: Integrating Shell Commands into Python Command-Line Tools

Kudzu Usage Pattern: Wrapping a Tool in Python Hybrid Kudzu Design Pattern: Wrapping a Tool in Python, and Then Changing the Behavior Hybrid Kudzu Design Pattern: Wrapping a Unix Tool in Python to Spawn Processes

Integrating Configuration Files Summary

14. Pragmatic Examples

Managing DNS with Python Using LDAP with OpenLDAP, Active Directory, and More with Python

Importing an LDIF File

Apache Log Reporting FTP Mirror

A. Callbacks Index About the Authors Colophon

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