In Zsh scripting, error handling is crucial for robust scripts. The ‘set’ command with ‘-e’ or ‘-o errexit’ options can be used to stop the script if any command fails. This helps in catching errors early and prevents propagation of incorrect data.
For more control over error handling, use ‘trap’ command. It allows you to define custom actions when an error occurs. For example, ‘trap ‘echo Error at line $LINENO’ ERR’ will print an error message with the line number where the error occurred.
Another approach is using conditional statements like ‘if’, ‘else’, ‘then’. They allow checking the exit status of a command and taking appropriate action based on that.
When working with functions, ensure they return non-zero exit status on failure. Use ‘return 1’ or similar to indicate failure.
Remember to always test your scripts thoroughly to ensure all possible error scenarios are handled correctly.
