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Shell enables one or more arguments to be obtained from the standard output of another command. This feature is called _________

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Shell enables one or more arguments to be obtained from the standard output of another command. This feature is called _________

(a) command substitution

(b) argument substitution

(c) shell substitution

(d) korn

This question was posed to me in examination.

My question is based upon Command Substitution and Shell Variables topic in division The Shell of Unix

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Correct option is (a) command substitution

Explanation: Apart from a pipeline, shell enables connecting of two commands in another way. Shell enables one or more arguments to be obtained from the standard output of another command. This feature is called command substitution. For example, to display output like:

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