05-13-2008
deleting a line but keeping the same file
Hi,
I want to delete a line in a file that contains a string. I tried:
grep -v "mystring" Myfile > Myfile
But this makes the Myfile empty. I read that I need to do something like:
grep -v "mystring" Myfile > Myfile.new
rm Myfile
mv Myfile.new Myfile
Is there a way to avoid creating a temporary file??
Thanks in advance.
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POM2(1) User Contributed Perl Documentation POM2(1)
NAME
pom2 - convert POD to Text, HTML, etc., with Pod::POM
SYNOPSIS
pom2 text MyFile.pm > MyFile.txt
pom2 html MyFile.pm > MyFile.html
pom2 pod MyFile.pm > Myfile.pod
pom2 format [options] MyFile.pm > Myfile.xyz
DESCRIPTION
This script uses "Pod::POM" to convert a Pod document into text, HTML, back into Pod (e.g. to normalise a document to fix any markup
errors), or any other format for which you have a view module.
If the viewer is not one of the viewers bundled with "Pod::POM", the script searches for an installed "Pod::POM::View" module that matches
the specified format. For example if you have "Pod::POM::View::DocBook" installed then you could say:
pod2 docbook MyFile.pm > MyFile.xml
If any options other than "--help" are specified then they are passed to the constructor method of the view class. For example:
pod2 docbook --root=chapter --titlecasing MyFile.pm > MyFile.xml
would convert the Pod document to a DocBook chapter document with the titlecasing option enabled. Note that any string prefixed by ""--""
is taken as a valid option and passed to the constructor; if no value is specified then a value of 1 is passed in.
AUTHOR
Andy Wardley <abw@kfs.org>
extended by Andrew Ford <A.Ford@ford-mason.co.uk>
VERSION
This is version 0.3 of pom2.
COPYRIGHT
Copyright (C) 2000, 2001 Andy Wardley. All Rights Reserved.
Copyright (C) 2009 Andrew Ford. All Rights Reserved.
This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
SEE ALSO
For further information please see Pod::POM.
perl v5.12.1 2009-03-19 POM2(1)