Wicked Cool Shell Scripts - page 1
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- Table of Contents
- Table of Contents
- BackCover
- Wicked Cool Shell Scripts - 101 Scripts for Linux, Mac OS X, and Unix Systems
- Introduction
- What Is a Shell Script, Anyway?
- Which Shell?
- Organization of This Book
- The Website
- Acknowledgments
- Finally ...
- Chapter 1: The Missing Code Library
- What Is POSIX?
- 1 Finding Programs in the PATH
- 2 Validating Input: Alphanumeric Only
- 3 Normalizing Date Formats
- 4 Presenting Large Numbers Attractively
- 5 Validating Integer Input
- 6 Validating Floating-Point Input
- 7 Validating Date Formats
- 8 Sidestepping Poor Echo Implementations
- 9 An Arbitrary-Precision Floating-Point Calculator
- 10 Locking Files
- 11 ANSI Color Sequences
- 12 Building a Shell Script Library
- 13 Debugging Shell Scripts
- Chapter 2: Improving on User Commands
- 14 Formatting Long Lines
- 15 Archiving Files As They re Removed
- 16 Working with the Removed File Archive
- 17 Logging File Removals
- 18 Displaying the Contents of Directories
- 19 Locating Files by Filename
- 20 Emulating Another Environment: DIR
- 21 Digging Around in the Man Page Database
- 22 Displaying the Time in Different Time Zones
- Chapter 3: Creating Utilities
- 24 An Interactive Calculator
- 25 Checking the Spelling of Individual Words
- 26 Shpell: An Interactive Spell-Checking Facility
- 27 Adding a Local Dictionary to Spell
- 28 Converting Temperatures
- 29 Calculating Loan Payments
- 30 Keeping Track of Events
- Chapter 4: Tweaking Unix
- 31 Displaying a File with Line Numbers
- 32 Displaying a File with Additional Information
- 33 Wrapping Only Long Lines
- 34 Emulating GNU-Style Flags with Quota
- 35 Making sftp Look More Like ftp
- 36 Fixing grep
- 37 Working with Compressed Files
- 38 Ensuring Maximally Compressed Files
- Chapter 5: System Administration: Managing Users
- 39 Analyzing Disk Usage
- 40 Reporting Disk Hogs
- 41 Figuring Out Available Disk Space
- 42 Improving the Readability of df Output
- 43 Implementing a Secure Locate
- 44 Adding Users to the System
- 45 Suspending a User Account
- 46 Deleting a User Account
- 47 Validating the User Environment
- 48 Cleaning Up After Guests Leave
- Chapter 6: System Administration: System Maintenance
- 50 Setting the System Date
- 51 Displaying Which Services Are Enabled
- 52 Killing Processes by Name
- 53 Validating User crontab Entries
- 54 Ensuring That System cron Jobs Are Run
- 55 Rotating Log Files
- 56 Managing Backups
- 57 Backing Up Directories
- Chapter 7: Web and Internet Users
- 58 Calculating Time Spent Online
- 59 Downloading Files via FTP
- 60 Tracking BBC News with lynx
- 61 Extracting URLs from a Web Page
- 62 Defining Words Online
- 63 Keeping Track of the Weather
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