exit:tldr:45717

The command "exit /b" is used in a command prompt or batch file to exit the current batch script or sub-routine and return to the caller. Here's a breakdown of what it does:

• "exit" is a command used to terminate a command prompt or a batch script.
• The "/b" option is used with the "exit" command to specify that the exit code should be returned to the caller. It stands for "return to the caller." The exit code is a value that indicates the success or failure of the script or a specific operation within the script.

Typically, if you want to return an indicative exit code from a sub-routine or a script, you would use "exit /b" followed by the desired exit code. For example, "exit /b 0" would indicate a successful execution, while "exit /b 1" or any nonzero value would indicate an error occurred.

The use of "exit /b" can be helpful when writing batch scripts or utilizing sub-routines to handle various tasks and provide feedback to the caller about the result of the operation.