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Full Discussion: How to Delete string without opening a file
Top Forums Shell Programming and Scripting How to Delete string without opening a file Post 302253610 by redoubtable on Saturday 1st of November 2008 08:45:32 AM
Old 11-01-2008
If you want to modify a file you always have to open something (either using kernel's filesystem implementation or doing it the forensic way by opening a device directly and using the filesystem libs on user-space to control exactly what you're doing).

Anyway, the problem is not opening a file but reading it! And yet, I always have to read the file and then handle strings/patterns to delete something.

Hence,
Code:
 sed "/<\/log>/ { N; s/<\/log>\n<log logid=\"8423b5ae136366384884759350480\/1\/1\">//; s/<\/log>\n<log logid=\"8423b5ae190810252359350480\/1\/1\">// }" YOUR-900MB-FILENAME-HERE > new900MBfileWithoutThoseTwoEntries

This might take a while.
 

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LEARN ABOUT DEBIAN

net::epp::frame::command::delete::domain

Net::EPP::Frame::Command::Delete::Domain(3pm)		User Contributed Perl Documentation	     Net::EPP::Frame::Command::Delete::Domain(3pm)

NAME

       Net::EPP::Frame::Command::Delete::Domain - an instance of Net::EPP::Frame::Command::Delete for domain names.

SYNOPSIS

	       use Net::EPP::Frame::Command::Delete::Domain;
	       use strict;

	       my $delete = Net::EPP::Frame::Command::Delete::Domain->new;
	       $delete->setDomain('example.tld');

	       print $delete->toString(1);

       This results in an XML document like this:

	       <?xml version="1.0" encoding="UTF-8"?>
	       <epp xmlns="urn:ietf:params:xml:ns:epp-1.0"
		 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
		 xsi:schemaLocation="urn:ietf:params:xml:ns:epp-1.0
		 epp-1.0.xsd">
		   <command>
		     <delete>
		       <domain:delete
			 xmlns:domain="urn:ietf:params:xml:ns:domain-1.0"
			 xsi:schemaLocation="urn:ietf:params:xml:ns:domain-1.0
			 domain-1.0.xsd">
			   <domain:name>example.tldE<lt>/domain:name>
		       </domain:delete>
		     </delete>
		     <clTRID>0cf1b8f7e14547d26f03b7641660c641d9e79f45</clTRIDE<gt>
		   </command>
	       </epp>

OBJECT HIERARCHY

	   L<XML::LibXML::Node>
	   +----L<XML::LibXML::Document>
	       +----L<Net::EPP::Frame>
		   +----L<Net::EPP::Frame::Command>
		       +----L<Net::EPP::Frame::Command::Delete>
			   +----L<Net::EPP::Frame::Command::Delete::Domain>

METHODS

	       $frame->setDomain($domain_name);

       This specifies the domain name to be deleted.

AUTHOR

       CentralNic Ltd (http://www.centralnic.com/).

COPYRIGHT

       This module is (c) 2012 CentralNic Ltd. This module is free software; you can redistribute it and/or modify it under the same terms as Perl
       itself.

SEE ALSO

       o   Net::EPP::Frame

perl v5.14.2							    2012-04-23			     Net::EPP::Frame::Command::Delete::Domain(3pm)
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