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The UNIX shell is the main scripting environment of every Linux, Mac OS X and UNIX system, whether a rescued laptop or a million-dollar mainframe. This cookbook of useful, customizable, and fun scripts gives you the tools to solve common Linux, Mac OS X and UNIX problems and personalize your computing environment. Among the more than 100 scripts included are an interactive calculator, a spell checker, a disk backup utility, a weather tracker, and a web logfile analysis tool. The book also teaches you how to write your own sophisticated shell scripts by explaining the syntax and techniques used to build each example scripts. Examples are written in Bourne Shell (sh) syntax.
Chapter 1: The Missing Code Library
Script #1 Finding Programs in the PATH
Script #2 Validating Input: Alphanumeric Only
Script #3 Normalizing Date Formats
Script #4 Presenting Large Numbers Attractively
Script #5 Validating Integer Input
Script #6 Validating Floating-Point Input
Script #7 Validating Date Formats
Script #8 Sidestepping Poor Echo Implementations
Script #9 An Arbitrary-Precision Floating-Point Calculator
Script #10 Locking Files
Script #11 ANSI Color Sequences
Script #12 Building a Shell Script Library
Script #13 Debugging Shell Scripts
Chapter 2: Improving on User Commands
Script #14 Formatting Long Lines
Script #15 Archiving Files As They're Removed
Script #16 Working with the Removed File Archive
Script #17 Logging File Removals
Script #18 Displaying the Contents of Directories
Script #19 Locating Files by Filename
Script #20 Emulating Another Environment: DIR
Script #21 Digging Around in the Man Page Database
Script #22 Displaying the Time in Different Time Zones
Chapter 3: Creating Utilities
Script #23 A Reminder Utility
Script #24 An Interactive Calculator
Script #25 Checking the Spelling of Individual Words
Script #26 Shpell: An Interactive Spell-Checking Facility
Script #27 Adding a Local Dictionary to Spell
Script #28 Converting Temperatures
Script #29 Calculating Loan Payments
Script #30 Keeping Track of Events
Chapter 4: Tweaking Unix
Script #31 Displaying a File with Line Numbers
Script #32 Displaying a File with Additional Information
Script #33 Wrapping Only Long Lines
Script #34 Emulating GNU-Style Flags with Quota
Script #35 Making sftp Look More Like ftp
Script #36 Fixing grep
Script #37 Working with Compressed Files
Script #38 Ensuring Maximally Compressed Files
Chapter 5: System Administration: Managing Users
Script #39 Analyzing Disk Usage
Script #40 Reporting Disk Hogs
Script #41 Figuring Out Available Disk Space
Script #42 Improving the Readability of df Output
Script #43 Implementing a Secure Locate
Script #44 Adding Users to the System
Script #45 Suspending a User Account
Script #46 Deleting a User Account
Script #47 Validating the User Environment
Script #48 Cleaning Up After Guests Leave
Chapter 6: System Administration: System Maintenance
Script #49 Tracking Set User ID Applications
Script #50 Setting the System Date
Script #51 Displaying Which Services Are Enabled
Script #52 Killing Processes by Name
Script #53 Validating User crontab Entries
Script #54 Ensuring That System cron Jobs Are Run
Script #55 Rotating Log Files
Script #56 Managing Backups
Script #57 Backing Up Directories
Chapter 7: Web and Internet Users
Script #58 Calculating Time Spent Online
Script #59 Downloading Files via FTP
Script #60 Tracking BBC News with lynx
Script #61 Extracting URLs from a Web Page
Script #62 Defining Words Online
Script #63 Keeping Track of the Weather
Script #64 Checking for Overdue Books at the Library
Script #65 Digging Up Movie Info from IMDb
Script #66 Calculating Currency Values
Script #67 Tracking Your Stock Portfolio
Script #68 Tracking Changes on Web Pages
Chapter 8: Webmaster Hacks
Script #69 Seeing the CGI Environment
Script #70 Logging Web Events
Script #71 Building Web Pages on the Fly
Script #72 Processing Contact Forms
Script #73 Creating a Web-Based Photo Album
Script #74 Building a Guest Book
Script #75 Creating a Text-Based Web Page Counter
Script #76 Displaying Random Text
Chapter 9: Web and Internet Administration
Script #77 Identifying Broken Internal Links
Script #78 Reporting Broken External Links
Script #79 Verifying Spelling on Web Pages
Script #80 Managing Apache Passwords
Script #81 Synchronizing Directories with FTP
Script #82 Synchronizing to a Remote Directory via FTP
Script #83 Synchronizing Files with SFTP
Chapter 10: Internet Server Administration
Script #84 Exploring the Apache access_log
Script #85 Understanding Search Engine Traffic
Script #86 Exploring the Apache error_log
Script #87 Avoiding Disaster with a Remote Archive
Script #88 Mirroring a Website
Script #89 Tracking FTP Usage
Script #90 Monitoring Network Status
Script #91 Renicing Tasks by Process Name
Script #92 Adding New Virtual Host Accounts
Chapter 11: Mac OS X Scripts
Script #93 List NetInfo Users
Script #94 Adding a User to a Mac OS X System
Script #95 Adding an Email Alias
Script #96 Set the Terminal Title Dynamically
Script #97 Producing Summary Listings of iTunes Libraries
Script #98 Fixing the Open Command
Chapter 12: Shell Script Fun and Games
Script #99 Unscramble
Script #100 Guess the Word Before It's Too Late: Hangman
Script #101 A State Capitals Quiz
View sample scripts from the book:
Script #38 Ensuring Maximally Compressed Files
Script #60 Tracking BBC News with lynx
Script #84 Exploring the Apache access_log
Script #99 Unscramble
Editado: Enero 2004
368 páginas
ISBN-10: 1-59327-012-7
ISBN-13: 978-1-59327-012-4
Dave Taylor has a Masters degree in Education, an MBA, and has written a dozen technical books, including Learning UNIX for Mac OS X (O'Reilly), Solaris for Dummies (Hungry Minds), and Teach Yourself UNIX in 24 Hours (SAMS). He was a contributor to BSD 4.4 UNIX, and his software is included in many major UNIX distributions.
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