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Full Discussion: awk - find first occurence and replace it
Top Forums Shell Programming and Scripting awk - find first occurence and replace it Post 302937265 by cool.aquarian on Wednesday 4th of March 2015 02:52:08 PM
Old 03-04-2015
Quote:
Originally Posted by RudiC
Try
Code:
 awk -vL="$LogText" 'BEGIN {sub(/^[^ ]* message=/, "", L); sub (/ .*$/, "", L); print L}'
hello1

Thanks for this. It worked for me.
I have similar need for another use case.
Here, the variable LogText contains a JSON(which can be multiline), and I want to extract the first occurence same way:

LogText:
Code:
{
    "date" : "04-Mar",
    "name" : "john doe",
    "message" : "hello1",
    "role" : "dev",
    "message" : "hello2",
    "dept" : "chemistry",
    "message" : "hello3"
}

I am trying to obtain the first value of message (hello1) from this
Any clue on this? Smilie
 

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test::moose

Test::Moose(3)						User Contributed Perl Documentation					    Test::Moose(3)

NAME

       Test::Moose - Test functions for Moose specific features

VERSION

       version 2.1202

SYNOPSIS

	 use Test::More plan => 1;
	 use Test::Moose;

	 meta_ok($class_or_obj, "... Foo has a ->meta");
	 does_ok($class_or_obj, $role, "... Foo does the Baz role");
	 has_attribute_ok($class_or_obj, $attr_name, "... Foo has the 'bar' attribute");

DESCRIPTION

       This module provides some useful test functions for Moose based classes. It is an experimental first release, so comments and suggestions
       are very welcome.

EXPORTED FUNCTIONS

       meta_ok ($class_or_object)
	   Tests if a class or object has a metaclass.

       does_ok ($class_or_object, $role, ?$message)
	   Tests if a class or object does a certain role, similar to what "isa_ok" does for the "isa" method.

       has_attribute_ok($class_or_object, $attr_name, ?$message)
	   Tests if a class or object has a certain attribute, similar to what "can_ok" does for the methods.

       with_immutable { CODE } @class_names
	   Runs CODE (which should contain normal tests) twice, and make each class in @class_names immutable in between the two runs.

	   The CODE block is called with a single boolean argument indicating whether or not the classes have been made immutable yet.

TODO

       Convert the Moose test suite to use this module.
       Here is a list of possible functions to write
	   immutability predicates
	   anon-class predicates
	   discovering original method from modified method
	   attribute metaclass predicates (attribute_isa?)

SEE ALSO

       Test::More

BUGS

       See "BUGS" in Moose for details on reporting bugs.

AUTHORS

       o   Stevan Little <stevan.little@iinteractive.com>

       o   Dave Rolsky <autarch@urth.org>

       o   Jesse Luehrs <doy@tozt.net>

       o   Shawn M Moore <code@sartak.org>

       o   XXXX XXX'XX (Yuval Kogman) <nothingmuch@woobling.org>

       o   Karen Etheridge <ether@cpan.org>

       o   Florian Ragwitz <rafl@debian.org>

       o   Hans Dieter Pearcey <hdp@weftsoar.net>

       o   Chris Prather <chris@prather.org>

       o   Matt S Trout <mst@shadowcat.co.uk>

COPYRIGHT AND LICENSE

       This software is copyright (c) 2006 by Infinity Interactive, Inc..

       This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

perl v5.18.2							    2014-01-19							    Test::Moose(3)
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