Linux Shell Scripting

  1. Advanced Scripting Techniques
    1. Error Handling and Debugging
      1. Shell Options for Error Handling
        1. Exit on Error
          1. Treat Unset Variables as Errors
            1. Pipeline Failure Handling
              1. Verbose Execution
              2. Debugging Techniques
                1. Trace Execution
                  1. Syntax Checking
                    1. Step-by-Step Debugging
                      1. Variable State Inspection
                      2. Signal Handling
                        1. The trap Command
                          1. Signal Types and Numbers
                            1. Cleanup Functions
                              1. Graceful Script Termination
                                1. Custom Signal Handlers
                                2. Error Logging
                                  1. Log File Management
                                    1. Error Message Formatting
                                      1. Syslog Integration
                                    2. Process Management
                                      1. Background Process Execution
                                        1. Ampersand Operator
                                          1. nohup Command
                                            1. Disown Command
                                            2. Job Control
                                              1. Job Listing
                                                1. Foreground and Background Jobs
                                                  1. Job Suspension and Resumption
                                                    1. Job Termination
                                                    2. Process Communication
                                                      1. Process IDs
                                                        1. Parent-Child Relationships
                                                          1. Process Groups
                                                            1. Session Management
                                                            2. Signal Management
                                                              1. Sending Signals
                                                                1. Signal Names and Numbers
                                                                  1. Process Termination
                                                                    1. Custom Signal Handling
                                                                    2. Subshells and Command Groups
                                                                      1. Subshell Creation
                                                                        1. Variable Scope in Subshells
                                                                          1. Command Grouping
                                                                            1. Process Substitution
                                                                          2. Inter-Process Communication
                                                                            1. Named Pipes (FIFOs)
                                                                              1. File-Based Communication
                                                                                1. Lock Files
                                                                                  1. Shared Memory Concepts
                                                                                  2. Performance Optimization
                                                                                    1. Script Profiling
                                                                                      1. Memory Usage Optimization
                                                                                        1. CPU Usage Optimization
                                                                                          1. I/O Optimization
                                                                                            1. Caching Strategies

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                                                                                          7. Text Processing and System Utilities

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                                                                                          9. System Administration and Automation