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Full Discussion: Explain this AWK script plz
Top Forums Shell Programming and Scripting Explain this AWK script plz Post 302340572 by Gopal_Engg on Tuesday 4th of August 2009 02:05:10 AM
Old 08-04-2009
Quote:
Originally Posted by Gopal_Engg
Hi Thanks for you reply
but tell me what you mean by "column details"?
Code:
 
Hi frnd,

My main problem is that

We need to identify the keyword Targ Rowid=  and “)” . Then we need to read the block of data (column values ) resides between those search pattern. Ok.

And we hav to loop through the entire log file to pick all required column values. Fine

Now in ur script, you have onse function named “Get_detail” which replace unwanted data with = symbol and make the block of data into single line with | delimited. Fine

When ur calling the function , y hv you mention ++ symbol. (ie., Get_detail++) . whether it is calling the function or just a normal variable declaration. If its declaration whats the use of it. 
What is the use of next; how its helping us to fulfill our requirement here.?

In the 3rd , we have like  /^)/ && Get_detail { . whats the use of Get_detail here. Is it a function calling? If so how its working. And why get_detail=0;


my main question is that,

we want to identify the both seach pattern and get the block of data and the block of data with pipe delimited. And need to loop through the entire log file.

You hv achived it in ur script. That is great. But I want understand how it capture the block of data .how this script loop through the session log for same purpose.

Plz explin the control flow in the script( ie., when ,which line ll get executed ?) explain me line by line. Plz frnd plzz .. even I couldn't sleep well since I couldn't understand the script.

Note: plz don't give overview explaination of the scriopt as you gave earlier. Plz little pit deeper. Line by line I want . I want control flow in the script.Plz dont ignor this post.


Send me the explination to my mail id:   gopal.narayanan@tcs.com

 

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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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