What Information Is Shown by the Echo $? Command

question 24

Multiple Choice

What information is shown by the echo $? command?

• A) The process ID of the echo command. The process ID of the echo command.
• B) The exit value of the command executed immediately before echo. The exit value of the command executed immediately before echo.
• C) The process ID which will be used for the next command.
• D) The exit value of the echo command. The exit value of the echo command.
• E) The process ID of the current shell.