Gawk program on linux

Posted 2020-08-09

refers to <Linux Command Line and Shell Scripting Bible>

date:Sep 18 2016

 

Gawk is to run scripts,So called program.It is programming-like environment.

 

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first example:

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$0 represents the entire line of the text.

Each data field is determined in a text line by a field separation character.When gawk reads a line of text,it delineates each data field using the defined field separation character.The default field separation character in gawk is any whitespace character(such as the tab or space characters).

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