When the command echo $ outputs 1, which of the following statements is true?
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.
Answer: C
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Answer is C, but the question should be with “$?”, not only “$”.
Please correct.