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Full Discussion: Begin/End blocks in awk: confused
Top Forums Shell Programming and Scripting Begin/End blocks in awk: confused Post 302882413 by blackrageous on Monday 6th of January 2014 05:31:24 PM
Old 01-06-2014
Begin and End blocks are optional. In this case, END is not at the beginning, it is at the end. The thing that is probably confusing you is because of the manner this is being run. The awk script is being specified inline (as opposed to using the -f switch to specify an awk script file).

Here is the start of the awk code

Code:
{count[$2]++; keyword[$2] = $1}

The end follows that. So there is no BEGIN section. This means every line of the input file will be processed against that line.
This may help...

At this point, I suggest reading awk and looking at examples.
Basic ways to call awk...

Code:
awk 'instructions' file.to.parse.txt
awk -f awkscript.awk file.to.parse.txt

This User Gave Thanks to blackrageous For This Post:
newbie2010
 

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LEARN ABOUT LINUX

igawk

IGAWK(1)							 Utility Commands							  IGAWK(1)

NAME

       igawk - gawk with include files

SYNOPSIS

       igawk [ all gawk options ] -f program-file [ -- ] file ...
       igawk [ all gawk options ] [ -- ] program-text file ...

DESCRIPTION

       Igawk is a simple shell script that adds the ability to have ``include files'' to gawk(1).

       AWK programs for igawk are the same as for gawk, except that, in addition, you may have lines like

	      @include getopt.awk

       in your program to include the file getopt.awk from either the current directory or one of the other directories in the search path.

OPTIONS

       See gawk(1) for a full description of the AWK language and the options that gawk supports.

EXAMPLES

       cat << EOF > test.awk
       @include getopt.awk

       BEGIN {
	    while (getopt(ARGC, ARGV, "am:q") != -1)
		 ...
       }
       EOF

       igawk -f test.awk

SEE ALSO

       gawk(1)

       Effective AWK Programming, Edition 1.0, published by the Free Software Foundation, 1995.

AUTHOR

       Arnold Robbins (arnold@skeeve.com).

Free Software Foundation					    Nov 3 1999								  IGAWK(1)
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