exit

The "exit" command is a command line tool used to exit and terminate the current shell. It is commonly used to close the current terminal window or to stop the execution of a script or program.

When you execute the "exit" command, it instructs the shell to return an exit status, which is a numeric value usually representing the success or failure of the previous command or script. The exit status can be accessed by other programs or scripts to determine the outcome of the execution.

The command can be used alone without any arguments, and it will simply terminate the current shell session, closing the terminal window or ending the script execution.

Additionally, you can provide an optional status code with the exit command, specifying a specific exit status for the shell. This can be helpful when scripting, as different exit codes can indicate different conditions or results.

For example, you can use the command "exit 0" to indicate a successful execution, while "exit 1" can represent a general error or failure. Other exit codes can be used to represent specific conditions or error types for better error handling and debugging.

In summary, the "exit" command is a useful tool in command line environments to gracefully exit a shell session or terminate script execution while providing an exit status code to indicate the outcome of the execution.