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INTERVIEW QUESTIONS PROGRAMMING LANGUAGES C++ DETAILS
Question :
How can you tell what shell you are running on UNIX system?

Category C++ Interview Questions
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Added on 7/16/2015
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You can do the Echo $RANDOM. It will return a undefined variable if you are from the C-Shell, just a return prompt if you are from the Bourne shell, and a 5 digit random numbers if you are from the Korn shell. You could also do a ps -l and look for the shell with the highest PID.
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