What is the use of string function sub(regex,replacement)?
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Write a command to print first and last line using sed command?
What are AWK Built-in Variables?
What is the use of ARGV ?
What is NF in AWK?
What are Regular Expressions in AWK?
What is the use of ERRNO?
What is the use of format specifier %o ?
What is the use of numeric function int ?
What is the use of string function index(string,search) in AWK?
what is information technology
Write a command remove all empty lines?
What is the use of RSTART, RLENGTH and match ?