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The ____ allows us to read data from the same file containing the script.

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The ____ allows us to read data from the same file containing the script.

(a) >>

(b) <<

(c) !!

(d) —

I got this question during a job interview.

The doubt is from Shell Programming using Various Commands in portion Essential Shell Programming of Unix

1 Answer

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The correct option is (b) <<

Easy explanation: It may happen that the data our program wants to read is fixed and limited. The shell uses << symbol to read data from the same file containing the script. This is referred to as a here document, signifying that the data is here rather than in a separate file.

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