10-29-2004
mtime vs ctime
i have a slight problem and would appreciate if someone could clarify the confusion.. i use find alot and so far i have done ok.. but it just struck me a couple of days ago that I am not quite sure what the difference between the modification time and the change time as in ctime and mtime and especially cnewer and newer.. as far as I can see I have tried to stat some of my files and most of the time all three access change and modification are the same.. no clues as to the differences from the man pages... which talks about modifcation and change isn't that the same.
any examples clues or feedback welcome
thanx moxx68
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LEARN ABOUT DEBIAN
tm::resourceable
TM::ResourceAble(3pm) User Contributed Perl Documentation TM::ResourceAble(3pm)
NAME
TM::ResourceAble - Topic Maps, abstract trait for resource-backed Topic Maps
SYNOPSIS
package MyNiftyMap;
use TM;
use base qw(TM);
use Class::Trait ('TM::ResourceAble');
1;
my $tm = new MyNiftyMap;
$tm->url ('http://nirvana/');
warn $tm->mtime;
# or at runtime even:
use TM;
Class::Trait->apply ('TM', qw(TM::ResourceAble));
my $tm = new TM;
warn $tm->mtime;
DESCRIPTION
This traits adds methods to provide the role resource to a map. That allows a map to be associated with a resource which is addressed by a
URL (actually a URI for that matter).
Predefined URIs
The following resources, actually their URIs are predefined:
"io:stdin"
Symbolizes the UNIX STDIN file descriptor. The resource is all text content coming from this file.
"io:stdout"
Symbolizes the UNIX STDOUT file descriptor.
"null:"
Symbolizes a resource which never delivers any content and which can consume any content silently (like "/dev/null" under UNIX).
Predefined URI Methods
"inline"
An inlined resource is a resource which contains all content as part of the URI. Currently the TM content is to be written in AsTMa=.
Example:
inlined:donald (duck)
INTERFACE
Methods
url $url = $tm->url
$tm->url ($url)
Once an object of this class is instantiated it keeps the URL of the resource to which it is associated. With this method you can
retrieve and set that. No special further action is taken otherwise.
mtime
$time = $tm->mtime
This function returns the UNIX time when the resource has been modified last. 0 is returned if the result cannot be determined. All
methods from LWP are supported.
Special resources are treated as follows:
"null:"
always has mtime 0
"io:stdin"
always has an mtime 1 second in the future. The idea is that STDIN always has new content.
"io:stdout"
always has mtime 0. The idea is that STDOUT never changes by itself.
SEE ALSO
TM
AUTHOR INFORMATION
Copyright 200[67], Robert Barta <drrho@cpan.org>, All rights reserved.
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
http://www.perl.com/perl/misc/Artistic.html
perl v5.10.1 2010-08-04 TM::ResourceAble(3pm)