Write a command delete all line except first line?
What is NF in AWK?
What is the use of numeric function sqrt ?
What is the use of sequence ?
How to get only zero byte files which are present in the directory?
What is the use of numeric function rand ?
What is the use of CONVFMT?
What is the use of string functiong sub(regex,replacement,string)?
What is the use of string function tolower(string)?
How add a first record and last record to the current file in linux?
how to run awk command specified in a file?
How to execute an AWK script?
Which shell to use with AWK?