10-12-2011
Find and Replace
i am having a file test1.txt and its contents is as follows.
<abcaaa bbb ccc ddd>
<dddeeeffff>
<my computer>
<abcmydocuments>
Now I need to find the text abc and should be replaced as follows.
<abc>
<dddeeeffff>
<my computer>
<abc>
First line has the text "abc" and it has to be replaced with abc removing all others characters.
Second line does not have the pattern abc and so it will not be disburbed and so as the third line.
The fourth line has the text "abc" and should be replaced by abc alone ignoring all other characters.
can anyone help me out how to perform this in unix shell script.
Thanks in advance.
Krishnakanth Manivannan
Software Engineer
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LEARN ABOUT DEBIAN
file::find::rule::procedural
File::Find::Rule::Procedural(3pm) User Contributed Perl Documentation File::Find::Rule::Procedural(3pm)
NAME
File::Find::Rule::Procedural - File::Find::Rule's procedural interface
SYNOPSIS
use File::Find::Rule;
# find all .pm files, procedurally
my @files = find(file => name => '*.pm', in => @INC);
DESCRIPTION
In addition to the regular object-oriented interface, File::Find::Rule provides two subroutines for you to use.
"find( @clauses )"
"rule( @clauses )"
"find" and "rule" can be used to invoke any methods available to the OO version. "rule" is a synonym for "find"
Passing more than one value to a clause is done with an anonymous array:
my $finder = find( name => [ '*.mp3', '*.ogg' ] );
"find" and "rule" both return a File::Find::Rule instance, unless one of the arguments is "in", in which case it returns a list of things
that match the rule.
my @files = find( name => [ '*.mp3', '*.ogg' ], in => $ENV{HOME} );
Please note that "in" will be the last clause evaluated, and so this code will search for mp3s regardless of size.
my @files = find( name => '*.mp3', in => $ENV{HOME}, size => '<2k' );
^
|
Clause processing stopped here ------/
It is also possible to invert a single rule by prefixing it with "!" like so:
# large files that aren't videos
my @files = find( file =>
'!name' => [ '*.avi', '*.mov' ],
size => '>20M',
in => $ENV{HOME} );
AUTHOR
Richard Clamp <richardc@unixbeard.net>
COPYRIGHT
Copyright (C) 2003 Richard Clamp. 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
File::Find::Rule
perl v5.12.4 2011-09-19 File::Find::Rule::Procedural(3pm)