Linux Shell Scripting

  1. Data Structures and Text Processing
    1. Arrays
      1. Indexed Arrays
        1. Array Declaration
          1. Element Assignment
            1. Accessing Elements
              1. Array Length
                1. Iterating Through Arrays
                  1. Array Expansion
                    1. Sparse Arrays
                    2. Associative Arrays
                      1. Declaration and Initialization
                        1. String Key Usage
                          1. Accessing and Modifying Elements
                            1. Iterating Through Keys and Values
                              1. Array Manipulation Functions
                            2. String Manipulation
                              1. String Length Operations
                                1. Substring Extraction
                                  1. Position-Based Extraction
                                    1. Length-Limited Extraction
                                    2. Pattern Matching and Replacement
                                      1. First Match Replacement
                                        1. Global Replacement
                                          1. Pattern Deletion
                                          2. Prefix and Suffix Operations
                                            1. Shortest Match Removal
                                              1. Longest Match Removal
                                                1. Use Cases and Examples
                                                2. Case Conversion
                                                  1. Uppercase Conversion
                                                    1. Lowercase Conversion
                                                      1. First Character Manipulation
                                                      2. String Comparison
                                                        1. Lexicographic Comparison
                                                          1. Pattern Matching
                                                            1. Regular Expression Matching
                                                          2. Advanced Parameter Expansion
                                                            1. Default Value Assignment
                                                              1. Alternative Value Assignment
                                                                1. Error on Unset Variables
                                                                  1. Indirect Variable References
                                                                    1. Array Slicing
                                                                      1. Parameter Length

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                                                                    5. Functions and Modular Programming

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                                                                    7. Text Processing and System Utilities