What is the use of string function sub(regex,replacement,string)?
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What is the use of numeric function int ?
What is NR in AWK?
What is the use of string function length(string) in AWK?
EPFO 2009 result has come or not which is held in sep 2009, pls told me, I have ever asked you.
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What is the use of string function match(string,regex)?
Write a command delete all line except first line?
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