AWK command in Unix/Linux with examples
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Awk is a scripting language used for manipulating the data and generating reports.
The awk command programming language requires no compiling process and allows the user to use variables, numeric functions, string functions, and logical operators as well.
Awk is a utility that enables a programmer to write very tiny but effective programs in the form of statements that define the text patterns that are to be searched for in each line of a document and the action that is to be taken when a match is found within a line. Awk is mostly used for pattern scanning and processing. It searches under one or more files to see if they contain lines that match with the specified patterns we asked for and then perform the associated actions.
Awk is abbreviated from the names of its developers – Aho, Weinberger, and Kernighan.
Syntax:
awk options 'selection _criteria {action }' input-file (less than bracket) output-file
Options:
-f program-file : Reads the AWK program source from the file
program-file, instead of from the
first command-line argument.
-F fs : Use fs for the input field separator
Some Standard examples:
The default behavior of Awk
Print the lines which match the given pattern
Splitting a Line Into Fields
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