awk COMMAND

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:
The Syntax is
awk '{pattern + action}' {filenames}

OPTIONS:

-W version	Display version information and exit.
-F	Print help message and exit.

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

Data in file1.txt

14 15 16

15 15 11

5 56 6

5 25 1

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 12