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Top Forums Shell Programming and Scripting Need help to pick the content from Log file Post 302783599 by Yoda on Wednesday 20th of March 2013 05:00:39 PM
Old 03-20-2013
Here is the explanation of code:
Code:
        $0 ~ P1 {               # Check if current record matches pattern: P1 (project.*3)
                f = 1           # If yes, then set flag variable f = 1
                next            # Skip processing current record
        }

        $0 ~ P2 {               # Check if current record matches pattern: P2 (project.*4)
                f = 0           # If yes, then set flag variable f = 0
                next            # Skip processing current record
        }

        f                       # If f == 1 (true) AWK's default operation is to print current record

Basically we are setting a flag variable f to 1 when first pattern is matched & we set it to 0 when second is matched, the records are printed only if the flag is set to 1.
 

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Git::Repository::Log::Iterator(3pm)			User Contributed Perl Documentation		       Git::Repository::Log::Iterator(3pm)

NAME
Git::Repository::Log::Iterator - Split a git log stream into records SYNOPSIS
use Git::Repository::Log::Iterator; # use a default Git::Repository context my $iter = Git::Repository::Log::Iterator->new('HEAD~10..'); # or provide an existing instance my $iter = Git::Repository::Log::Iterator->new( $r, 'HEAD~10..' ); # get the next log record while ( my $log = $iter->next ) { ...; } DESCRIPTION
"Git::Repository::Log::Iterator" initiates a git log command from a list of paramaters and parses its output to produce "Git::Repository::Log" objects represening each log item. METHODS
new( @args ) Create a new git log stream from the parameter list in @args and return a iterator on it. "new()" will happily accept any parameters, but note that "Git::Repository::Log::Iterator" expects the output to look like that of "--pretty=raw", and so will force the the "--pretty" option (in case "format.pretty" is defined in the Git configuration). Extra output (like patches) will be stored in the "extra" parameter of the "Git::Repository::Log" object. Decorations will be lost. When unsupported options are recognized in the parameter list, "new()" will "croak()" with a message advising to use "run( 'log' => ... )" to parse the output yourself. next() Return the next log item as a "Git::Repository::Log" object, or nothing if the stream has ended. AUTHOR
Philippe Bruhat (BooK), "<book at cpan.org>" COPYRIGHT
Copyright 2010 Philippe Bruhat (BooK), all rights reserved. LICENSE
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.14.2 2011-12-28 Git::Repository::Log::Iterator(3pm)
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