When the command echo $ outputs 1, which of the following statements is true?
A. It is the process ID of the echo command.
B. It is the process ID of the current shell.
C. It is the exit value of the command executed immediately before echo.
D. It is the exit value of the echo command.
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fuck off bitches its echo $?
I believe it should be “When the command echo $? outputs 1, which of the following statements is true?”
the question is, what does echo $! output