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Full Discussion: How to find a string in a line in UNIX file and delete that line and previous 3 lines ?
Top Forums UNIX for Advanced & Expert Users How to find a string in a line in UNIX file and delete that line and previous 3 lines ? Post 302901922 by Perderabo on Friday 16th of May 2014 12:06:47 PM
Old 05-16-2014
Here is another solution:
Code:
#! /bin/bash


awk ' BEGIN {i=0;}
        /Field 039 00/ { count = 0 ; next}
        {
        Store[i]=$0;
        i = (i+1) % 4;
        if (count < 3)
                count++;
        else
                print Store[i];
        }
        END {
                while (count--) {
                i = (i+1) % 4;
                print Store[i];
                }}' data
exit 0

It did not work until I put in the BEGIN block. I have to say I don't understand why. I expected i to just pop into existence with a value of 0. Maybe that doesn't work with subscripts.
 

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LEARN ABOUT DEBIAN

catalyst::authentication::store::imap::user

Catalyst::Authentication::Store::IMAP::User(3pm)	User Contributed Perl Documentation	  Catalyst::Authentication::Store::IMAP::User(3pm)

NAME

       Catalyst::Authentication::Store::IMAP::User - An authentication user for IMAP.

SYNOPSIS

	       use Catalyst::Authentication::Store::IMAP::User;

	       Catalyst::Authentication::Store::IMAP::User->new(
		       id => "username",
	       );

DESCRIPTION

       This implementation of authentication user handles is supposed to go hand in hand with Catalyst::Authentication::Store::IMAP.

METHODS

   new( @pairs )
       Create a new object with the key-value-pairs listed in the arg list.

   supported_features( )
       Checks for existence of keys that correspond with features.

   for_session( )
       Just returns $self, expecting it to be serializable.

   from_session( )
       Just passes returns the unserialized object, hoping it's intact.

   store( )
       Accessors that override superclass's dying virtual methods.

   id( )
   check_password( $password )
       Establishes a connection to the IMAP server and checks the given user credentials.  Stores the Mail::IMAPClient object on the stash as
       imapclient for usage by other components.

SEE ALSO

       Hash::AsObject

AUTHOR

       Stefan Seifert <nine@cpan.org>

LICENSE

       This library is free software, you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.14.2							    2012-06-16			  Catalyst::Authentication::Store::IMAP::User(3pm)
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