Linux Shell Scripting

  1. Best Practices and Professional Development
    1. Code Quality and Style
      1. Commenting Standards
        1. Inline Comments
          1. Function Documentation
            1. Script Headers
              1. TODO and FIXME Comments
              2. Code Formatting
                1. Consistent Indentation
                  1. Line Length Guidelines
                    1. Whitespace Usage
                      1. Bracket and Brace Placement
                      2. Naming Conventions
                        1. Variable Naming
                          1. Function Naming
                            1. File Naming
                              1. Constant Naming
                              2. Code Organization
                                1. Script Structure
                                  1. Function Placement
                                    1. Configuration Sections
                                      1. Modular Design
                                    2. Portability and Compatibility
                                      1. POSIX Compliance
                                        1. POSIX Shell Features
                                          1. Avoiding Bash-Specific Features
                                            1. Cross-Platform Considerations
                                            2. Shell Detection
                                              1. Identifying the Current Shell
                                                1. Feature Detection
                                                  1. Graceful Degradation
                                                  2. Command Availability Checking
                                                    1. Using command -v
                                                      1. Alternative Command Detection
                                                        1. Fallback Strategies
                                                      2. Security Considerations
                                                        1. Input Validation
                                                          1. User Input Sanitization
                                                            1. Command Injection Prevention
                                                              1. Path Traversal Protection
                                                              2. Secure File Handling
                                                                1. Temporary File Creation
                                                                  1. File Permission Management
                                                                    1. Secure File Deletion
                                                                    2. Privilege Management
                                                                      1. Least Privilege Principle
                                                                        1. sudo Integration
                                                                          1. Permission Checking
                                                                          2. Environment Security
                                                                            1. PATH Security
                                                                              1. Environment Variable Validation
                                                                                1. Secure Script Distribution
                                                                              2. Testing and Quality Assurance
                                                                                1. Unit Testing for Shell Scripts
                                                                                  1. Integration Testing
                                                                                    1. Test Automation
                                                                                      1. Continuous Integration
                                                                                      2. Documentation and Maintenance
                                                                                        1. Script Documentation
                                                                                          1. Version Control Integration
                                                                                            1. Change Management
                                                                                              1. Maintenance Strategies
                                                                                              2. Command-Line Interface Design
                                                                                                1. Option Parsing with getopts
                                                                                                  1. Long Option Support
                                                                                                    1. Help and Usage Messages
                                                                                                      1. Configuration File Handling
                                                                                                        1. Interactive vs Non-Interactive Modes

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                                                                                                      9. System Administration and Automation

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                                                                                                      1. Introduction to Shell Scripting