2.4 Text Processing Fundamentals

Content

• Overview and Objectives
• grep: Searching Text with Regular Expressions
  • Case Sensitivity and Basic Options
  • Regular Expressions: Pattern Matching Power
  • Advanced grep Techniques
  • Exit Codes and Scripting
• sed: Stream Editing for Simple Text Modifications
  • Making Permanent Changes
  • Working with Line Addresses
  • Deletion and Insertion
  • Regular Expressions in sed
  • Common sed Patterns for System Administration
• awk: Processing Structured Text Data
  • Calculations and Data Processing
  • BEGIN and END Blocks
  • Practical awk Examples
  • Field Separators and Formatted Output
• sort and uniq for Data Organization and Deduplication
  • Understanding sort
  • Advanced sort Options
  • Real-world Sort Examples
  • Understanding uniq
  • Practical sort and uniq Combinations
  • Working with Different Field Separators
• wc, cut, and tr for Text Analysis and Transformation
  • wc: Counting Text Elements
  • cut: Extracting Specific Fields or Characters
  • tr: Character Translation and Transformation
  • Practical Combinations
  • Advanced cut Techniques
  • Character Encoding and tr
• Real-world Context
• Common Pitfalls
• Recommended Reading
• Lab Exercises
  • Lab Setup
  • Exercise 1: Log Analysis with grep
  • Exercise 2: Text Transformation with sed
  • Exercise 3: Data Processing with awk
  • Exercise 4: Data Organization with sort and uniq
  • Exercise 5: Text Utilities Integration
• Assessment
  • Multiple-Choice Questions
  • Short Answer Questions

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Updated 2025-10-22