Description: Return values in Bash scripts indicate the result of the script’s execution. These values are integers ranging from 0 to 255, where a value of 0 generally indicates that the script executed successfully, while any other value indicates an error or a specific condition that occurred during execution. This mechanism is fundamental for error management and flow control in scripts, allowing developers and system administrators to make decisions based on the success or failure of operations performed. Return values can be used in conjunction with control structures like ‘if’ and ‘case’, facilitating the implementation of conditional logic in scripts. Additionally, return values can be utilized by other programs or scripts that invoke the Bash script, enabling effective communication between different system components. In summary, return values are an essential feature in scripting, providing a way to evaluate the outcome of operations and manage execution flow efficiently.
