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Top Forums UNIX for Dummies Questions & Answers Vi delete line with second occurence of pattern Post 302939548 by homer4all on Thursday 26th of March 2015 12:36:31 PM
Old 03-26-2015
Question Vi delete line with second occurence of pattern

I have a large file and many lines are duplicated. I'm trying to delete lines with every second occurrence of a pattern. Did tried searching similar question but no luck.


I can delete all lines matching pattern with :g/pattern/d but don't want to lose data.


Sample pattern to delete John-------Doe
Code:
Sample data:
Time--------FName---------LName
11:05-------John------------Doe
11:05-------John------------Doe
11:06-------Michael---------Lawrence
11:06-------Michale---------Lawrence

Expected result:
11:05-------John------------Doe
11:06-------Michael---------Lawrence


Last edited by rbatte1; 03-26-2015 at 01:43 PM.. Reason: Added ICODE tags
 

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Net::DNS::Mailbox(3)					User Contributed Perl Documentation				      Net::DNS::Mailbox(3)

NAME
Net::DNS::Mailbox - DNS mailbox representation SYNOPSIS
use Net::DNS::Mailbox; $mailbox = new Net::DNS::Mailbox('user@example.com'); $address = $mailbox->address; DESCRIPTION
The Net::DNS::Mailbox module implements a subclass of DNS domain name objects representing the DNS coded form of RFC822 mailbox address. METHODS
new $mailbox = new Net::DNS::Mailbox('John.Doe@example.com'); $mailbox = new Net::DNS::Mailbox('John Doe <j.doe@example.com>'); Creates a mailbox object which represents the DNS domain encoded form of the mail address specified by the character string argument. The argument string consists of printable characters from the 7-bit ASCII repertoire. address $address = $mailbox->address; Returns a character string corresponding to the RFC822 form of mailbox address of the domain as described in RFC1035 section 8. The string consists of printable characters from the 7-bit ASCII repertoire. DOMAIN NAME COMPRESSION AND CANONICALISATION
The Net::DNS::Mailbox1035 and Net::DNS::Mailbox2535 subclass packages implement RFC1035 domain name compression and RFC2535 canonicalisation. COPYRIGHT
Copyright (c)2009,2010 Dick Franks. All rights reserved. This program is free software; you may redistribute it and/or modify it under the same terms as Perl itself. SEE ALSO
perl, Net::DNS, Net::DNS::DomainName, RFC822, RFC1035, RFC5322 perl v5.16.2 2012-01-27 Net::DNS::Mailbox(3)
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