What are meta-characters?(a) special characters having predefined meaning to the shell(b) special symbols(c) shell symbols(d) command symbolsThis question was posed to me in an internship interview.This key question is from Commands topic in portion The Unix Architecture & General Purpose Utilities of Unix

What are meta-characters?(a) special characters having predefined mean

1.	What are meta-characters?(a) special characters having predefined meaning to the shell(b) special symbols(c) shell symbols(d) command symbolsThis question was posed to me in an internship interview.This key question is from Commands topic in portion The Unix Architecture & General Purpose Utilities of Unix
Answer» Right choice is (a) special characters having predefined meaning to the shell To EXPLAIN: meta-characters are special characters having a predefined meaning to the shell. They are used as wild CARDS for special purposes like PATTERN matching, OUTPUT redirecting etc. *, \|, < are meta-characters.

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