COMPUTER SCIENCE AND ENGINEERING
UNIX
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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$n
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$#
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$*
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$$
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Detailed explanation-1: -12. The complete set of positional parameters is stored in as a single string. Explanation: There are some special parameters used by the shell. One of which is $*, which stores the complete set of positional parameters as a single string.
Detailed explanation-2: -The variable # holds the number of positional parameters (as a character string).
Detailed explanation-3: -‘$#‘ refer to ‘The value of the total number of command line arguments passed. ‘ Thus, you can use $# to check the number of arguments/parameters passed like you did and handle any unexpected situations. etc.
Detailed explanation-4: -A positional parameter is a parameter denoted by one or more digits, other than the single digit 0 . Positional parameters are assigned from the shell’s arguments when it is invoked, and may be reassigned using the set builtin command.