awk Linux Commands

awk COMMAND:

awk command is used to manipulate the text.This command checks each line of a file, looking for patterns that match those given on the command line.

SYNTAX :

awk '{pattern + action}' {filenames}

OPTIONS:

EXAMPLE:

Lets create a file file1.txt and let it have the following data:

1. To print the second column data in file1.txt
   
   awk '{print $2}' file1.txt
   
   This command will manipulate and print second column of text file (file1.txt). The output will look like
   15
   15
   56
   25
   


2. To multiply the column-1 and column-2 and redirect the output to file2.txt:
   
   awk '{print $1,$2,$1*$2}' file1.txt > file2.txt

   Command Explanation:
   $1	:Prints 1st column
   $2	:Prints 2ndcolumn
   $1*$2	:Prints Result of $1 x $2
   file1.txt	: input file
   >	: redirection symbol
   file2.txt	: output file

   
   The above command will redirect the output to file2.txt and it will look like,
   14 15 210
   15 15 225
   5 56 280
   5 25 125