Shell Error Handling Patterns for robust error handling, cleanup, and debugging in shell scripts. Exit Codes Standard Exit Codes | Code | Meaning | |------|---------| | 0 | Success | | 1 | General error | | 2 | Misuse of shell command | | 126 | Command not executable | | 127 | Command not found | | 128+N | Fatal signal N | | 130 | Ctrl+C (SIGINT) | Checking Exit Status Trap for Cleanup Basic Cleanup Pattern Handling Multiple Signals Trap Best Practices Error Reporting Standard Error Output Verbose Logging Defensive Programming Check Prerequisites Validate Input Safe Temporary Files Debugging…