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Full Discussion: How to check for empty file in Perl?
Top Forums UNIX for Dummies Questions & Answers How to check for empty file in Perl? Post 302172693 by deepakwins on Tuesday 4th of March 2008 02:00:37 PM
Old 03-04-2008
No worries, Figured it out.
I should have given absolute path for the file.
Thanks anyways.
 

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LEARN ABOUT DEBIAN

debian::dpkglists

Debian::DpkgLists(3pm)					User Contributed Perl Documentation				    Debian::DpkgLists(3pm)

NAME

       Debian::DpkgLists - scan /var/lib/dpkg/info/*.list for files/patterns

SYNOPSIS

	   my @packages = Debian::DpkgLists->scan_full_path('/full/file/path');
	   my @packages = Debian::DpkgLists->scan_partial_path('file/path');
	   my @packages = Debian::DpkgLists->scan_pattern(qr{freedom$});
	   my @packages = Debian::DpkgLists->scan_perl_mod('Some::Module');

DESCRIPTION

       Debian::DpkgLists is a module for easy searching of dpkg(1)'s package file lists. These are located in /var/lib/dpkg/info/*.list and
       contain a simple list of full file names (including the leading slash).

       There are a couple of different class methods for searching by full or partial path, a regular expression or a Perl module name.

       Note that dpkg's file lists represent only dpkg's idea of what is installed on the system. If you want to also search in packages,
       available from the Debian archive but not installed locally, see Debian::AptContents.

CLASS-METHODS
       scan_full_path ( path )
	   Scans dpkg file lists for files, whose full path is equal to path. Use when you have the full path of the file you want, like
	   "/usr/bin/perl".

	   Returns a (possibly empty) list of packages containing path.

       scan_partial_path ( path )
	   Scans dpkg file lists for files, whose full path ends with path. Use when you only care about the file name or other trailing portion
	   of the full path like "bin/perl" (matches "/usr/bin/perl" and "/sbin/perl").

	   Returns a (possibly empty) list of packages containing files whose full path ends with path.

       scan_pattern ( pattern )
	   Scans dpkg file lists for files, whose full path matched pattern.

	   Returns a (possibly empty) list of packages containing files whose full path matches pattern.

       scan_perl_mod ( Module::Name )
	   Scans dpkg file lists for files, corresponding to given Module::Name. This is a shorthand method for "scan_pattern" with a pattern that
	   matches "/Module/Name.pm$" in all directories in @INC.

	   Returns a (possibly empty) list of packages containing possible Module::Name files.

AUTHOR

       Damyan Ivanov <dmn@debian.org>

COPYRIGHT &; LICENSE
       Copyright (C) 2010 Damyan Ivanov <dmn@debian.org>

       This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License version 2 as
       published by the Free Software Foundation.

       This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.

       You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation,
       Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

perl v5.14.2							    2012-01-15						    Debian::DpkgLists(3pm)
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