Question

Which of the following is false?

(a) here document provides standard input to any script non interactively

(b) read command is used for making scripts interactive

(c) $* stores the number of arguments specified

(d) && and || are logical operators

This question was addressed to me in my homework.

I would like to ask this question from Shell Programming using Various Commands in section Essential Shell Programming of Unix

Answer 1

Correct choice is (c) $* stores the number of arguments specified

For explanation: The shell uses << symbol to read data from the same file containing the script. This is referred to as a here document. read command allows us to take input from the user to make the script interactive. && and || are logical operators which allow conditional execution. $* stores the complete set of positional parameters as a single string.