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Top Forums Shell Programming and Scripting Question on file owner name representation Post 302425227 by Corona688 on Thursday 27th of May 2010 11:06:44 AM
Old 05-27-2010
It's quite possible to have files belonging to users or groups with no corresponding entry in /etc/passwd or /etc/group, nothing prevents it. Anything with sufficient privileges can create files belonging to any ID and group whether represented by anything in passwd or group or not; those only control login permissions through the traditional login system.
Code:
touch this ; sudo chown 9999 this

All users and groups are just numbers anyway. If ls doesn't find matching entries in passwd and/or group it will just display numbers. As long as whatever login manager involved sets correct access permissions on login based on the relevant user and group numbers, and the numbers used internally and externally don't overlap, things can be kept consistent without knowing all names locally.

Last edited by Corona688; 05-27-2010 at 12:17 PM..
 

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Graphics::Primitive::Insets(3pm)			User Contributed Perl Documentation			  Graphics::Primitive::Insets(3pm)

NAME
Graphics::Primitive::Insets - Space between things DESCRIPTION
Graphics::Primitive::Insets represents the amount of space that surrounds something. This object can be used to represent either padding or margins (in the CSS sense, one being inside the bounding box, the other being outside) SYNOPSIS
use Graphics::Primitive::Insets; my $insets = Graphics::Primitive::Insets->new({ top => 5, bottom => 5, left => 5, right => 5 }); METHODS
Constructor new Creates a new Graphics::Primitive::Insets. Instance Methods as_array Return these insets as an array in the form of top, right, bottom and left. bottom Set/Get the inset from the bottom. equal_to Determine if these Insets are equal to another. left Set/Get the inset from the left. right Set/Get the inset from the right. top Set/Get the inset from the top. zero Sets all the insets (top, left, bottom, right) to 0. AUTHOR
Cory Watson, "<gphat@cpan.org>" SEE ALSO
perl(1) COPYRIGHT &; LICENSE Copyright 2008-2010 by Cory G Watson. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.12.3 2010-08-21 Graphics::Primitive::Insets(3pm)
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