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Output is often textual in nature. $SHELL semantics facilitate simple IO stream connections for unlimited processing. Any text visualized can be parsed and processed. If textual data are organized by delimiters, use: 'awk' to extract fields-of-interest. If textual data are locked in lines of streams, use 'sed' to extract and/or manipulate desired streams. If both are needed, use $SHELL semantics to connect and process. Awk and Sed are essential tools. Learn and use them.

Release Syllabus

Field | Streams Processing

LinuxCBT Scripting Edition - Awk & Sed - Module VI

  • Introduction - Features
    • Discuss course outline
    • Explore system configuration
    • Identify key systems to be used
    • Install the Bluefish graphical editor - Supports POSIX and PERL-compatible RegExes
    • Discuss features common and distinct to: Awk and Sed
  •  
  • Regular Expressions Review
    • Enumerate important metacharacters
    • Provide examples of quatinfier usage
    • Apply simple character classes to searches
    • Perform searches in the Bluefish editor using literals and metacharacters
    • Explain and apply anchors: '^', '$'
  •  
  • Intro to Sed - Stream Editor
    • Discuss features and applications
    • Explain general usage syntax
    • Print specific lines from input
    • Delete specific lines from input
    • Match streams using RegExes
    • Search for ranges of text using line numbers and text ranges
    • Save transformed output
  •  
  • Sed - Search & Replace
    • Discuss features and applications
    • Discuss Left-hand and Righ-hand side (LHS | RHS) sections in search & replace actions
    • Acquire input from: STDIN, PIPES and Files and transform according to criteria
    • Backup and overwrite source files using Sed one-liners
    • Perform substitutions based on matched addresses
    • Reuse matched strings in replacement output
    • Perform text substitutions across multiple files
    • Perform multiple replacements in one command
    • Apply substitutions globally across all matches
  •  
  • Sed - Scripts
    • Discuss features and applications
    • Explain general usage syntax
    • Create script to remove blank lines from input stream
    • Create script to make general substitutions
    • Perform case-insensitive replacements via Sed script
    • Insert strings into desried location in the input stream via Sed script
    • Strip trailing numeric values from input stream via Sed script
    • Apply changes to multiple files
    • Save scripts for reuse
  •  
  • Intro to Awk - Field Processor & Reporter
    • Discuss features and benefits
    • Explain general usage syntax
    • Print full lines from input
    • Print desired fields from input
    • Match patterns using RegExes
    • Control the input field | column delimiters
    • Save output
  •  
  • Awk - Scripts
    • Discuss features and benefits
    • Explain structure of Awk scripts
    • Implement BEGIN and END blocks
    • Parse system files using Awk script
  •  
  • Awk - Variables
    • Discuss features and applications
    • Enumerate and discuss key Awk system variables
    • Increment counters based on matched patterns using Awk
    • Explain variable concatenation
    • Explore arrays (lists of values)
    • Create arrays using the split function
  •  
  • Awk - Operators
    • Discuss features and applications
    • Explore Boolean and Relational operators
    • Discuss looping strategies
    • Evaluate conditional testing using system variables
    • Evaluate results
  •  
  • Awk - Process Records
    • Discuss features and benefits
    • Define and evaluate multiple input field separators with files with mixed delimiters
    • Normalize output by controlling the Output Field Separator (OFS)
    • Extract records from system file and evaluated
    • Account for number of processed and matched records in END block
  •  
  • Awk - Print Formatting
    • Discuss features and applications
    • Compare and contrast 'print' and 'printf' output formatting
    • Discuss 'printf' supported data types
    • Evaluate 'printf' application in reporting
  •  
  • Awk & Sed - Various Examples
    • Discuss features and applications
    • Parse and cleanup HTML and PHP files with Sed & Awk
    • Replace values in system file with Awk
    • Evaluate results
  •  
  • Awk & Sed - Win32
    • Discuss features and benefits
    • Download and install Awk & Sed for Win32
    • Transfer Linux files to Windows
    • Test various parsing and substitution on Linux files
    • Evaluate results
  •  
  • Sed - File Name Transformations - Batch
    • Enumerate poorly-named files for transformation
    • Identify key replacement strings for regular expressions match
    • Define and apply regular expressions for transformations
    • Transform prefixes and suffixes
    • Evaluate results
  •  
  • Awk - E-Mail Address Parsing
    • Generate sample data set
    • Define regular expressions patterns for transformation
    • Transform sample data
    • Evaluate results
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