Individual Line processing in awk

Shell Programming and Scripting
1

Hi ,

I have a file like

Activate your Membership now!
Dear Cyrus Every relationship needs nurturing. Including ours. 
2011-08-09T10:18:14Z
2011-08-09T10:18:14Z
tag:gmail.google.com,2004:1376659800396305843
T League
email@email.tleague.com
How to refresh a graphical display through bash script
hi i am just testing for the maximum capacity
2011-08-08T21:30:16Z
2011-08-08T21:30:16Z
tag:gmail.google.com,2004:1376611484483384709
me
cyrus.ic@gmail.com
NEWS: 'Write RTI' iPhone Mobile application launched
Dear RTIXT member, We have launched the free iPhone mobile 
2011-08-06T15:08:16Z
2011-08-06T15:08:16Z
tag:gmail.google.com,2004:1376406257464900735
admin@rtixt.org
admin@rtixt.org
[sunfeb2007:1634] Happy Friendship Day!
Hello My Friends, Happy Friendship Day Its fun to make fun of 
2011-08-06T10:23:28Z
2011-08-06T10:23:28Z
tag:gmail.google.com,2004:1376388339345447220
cyrus
cyrus22@gmail.com
OPENING FORC, C++ WITH UNIX AND ORACLE 
For Internal Use of Employer (Please don't delete or 
2011-08-05T09:55:57Z
2011-08-05T09:55:57Z
tag:gmail.google.com,2004:1376296011450947315
Ma Foi Management 
software.jobs@mafoirandstad.com

I want to parse every seven line at a time , where I have to choose only 1,2,6,7 lines to display in some formatted way .
Example for the first 7 lines the output should be like

You have got a mail from T League(email@email.tleague.com)
Sub: Activate your Membership now!
Desc:Dear Cyrus Every relationship needs nurturing. Including ours.

The above format goes for each set of 7 lines , the above example is for first 7 lines only.

Please avoid Perl in answer because I am not aware of that .
If this could be done in awk , as I am not able to find an answer.

Hope I am clear.

Thanks in advance.

2

Try:

awk '!(NR%7-6){a=$0}!(NR%7-1){b=$0}!(NR%7-2){c=$0}!(NR%7){print "You have got a mail from "a"("$0")\nSub: "b"\nDesc: "c}' file
3

I don't think awk oneliners should count as oneliners if they're wider than the screen.

how about this:

$ awk '{
        EOF=0;
        for (N=1; (!EOF) && (N<7); N++)
                if(!getline A[N]) EOF=1;

        if(!EOF)
        {
                printf("You have an email from %s (%s)\n", A[5], A[6]);
                printf("Sub: %s\n", $0);
                printf("Desc: %s\n\n", A[1]);
        }
}' < data
You have an email from T League (email@email.tleague.com)
Sub: Activate your Membership now!
Desc: Dear Cyrus Every relationship needs nurturing. Including ours.

You have an email from me (cyrus.ic@gmail.com)
Sub: How to refresh a graphical display through bash script
Desc: hi i am just testing for the maximum capacity

You have an email from admin@rtixt.org (admin@rtixt.org)
Sub: NEWS: 'Write RTI' iPhone Mobile application launched
Desc: Dear RTIXT member, We have launched the free iPhone mobile

You have an email from cyrus (cyrus22@gmail.com)
Sub: [sunfeb2007:1634] Happy Friendship Day!
Desc: Hello My Friends, Happy Friendship Day Its fun to make fun of

You have an email from Ma Foi Management  (software.jobs@mafoirandstad.com)
Sub: OPENING FORC, C++ WITH UNIX AND ORACLE
Desc: For Internal Use of Employer (Please don't delete or

$

It just retrieves 6 extra lines per loop to make up the difference so complex logic to print different lines on different loops isn't needed.

4

It fits nicely in one line on my 22" LCD :wink: