Question

To know the exit status of a command, we can use ____

(a) $$

(b) $*

(c) $?

(d) $-

The question was posed to me in quiz.

My query is from Logical Operators and Conditional Execution topic in chapter Essential Shell Programming of Unix

Answer 1

Right option is (c) $?

The explanation is: The parameter $? stores the exit status of the last command. It displays the value if the command succeeds and a non zero value if it fails.