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Shell Programming and Scripting
perl: Assigning array values..
Post 302214673 by looza on Monday 14th of July 2008 03:42:42 PM
07-14-2008
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LEARN ABOUT REDHAT
io::dir
IO::Dir(3pm) Perl Programmers Reference Guide IO::Dir(3pm) NAME
IO::Dir - supply object methods for directory handles SYNOPSIS
use IO::Dir; $d = new IO::Dir "."; if (defined $d) { while (defined($_ = $d->read)) { something($_); } $d->rewind; while (defined($_ = $d->read)) { something_else($_); } undef $d; } tie %dir, IO::Dir, "."; foreach (keys %dir) { print $_, " " , $dir{$_}->size," "; } DESCRIPTION
The "IO::Dir" package provides two interfaces to perl's directory reading routines. The first interface is an object approach. "IO::Dir" provides an object constructor and methods, which are just wrappers around perl's built in directory reading routines. new ( [ DIRNAME ] ) "new" is the constuctor for "IO::Dir" objects. It accepts one optional argument which, if given, "new" will pass to "open" The following methods are wrappers for the directory related functions built into perl (the trailing `dir' has been removed from the names). See perlfunc for details of these functions. open ( DIRNAME ) read () seek ( POS ) tell () rewind () close () "IO::Dir" also provides an interface to reading directories via a tied HASH. The tied HASH extends the interface beyond just the directory reading routines by the use of "lstat", from the "File::stat" package, "unlink", "rmdir" and "utime". tie %hash, IO::Dir, DIRNAME [, OPTIONS ] The keys of the HASH will be the names of the entries in the directory. Reading a value from the hash will be the result of calling "File::stat::lstat". Deleting an element from the hash will call "unlink" providing that "DIR_UNLINK" is passed in the "OPTIONS". Assigning to an entry in the HASH will cause the time stamps of the file to be modified. If the file does not exist then it will be cre- ated. Assigning a single integer to a HASH element will cause both the access and modification times to be changed to that value. Alterna- tively a reference to an array of two values can be passed. The first array element will be used to set the access time and the second ele- ment will be used to set the modification time. SEE ALSO
File::stat AUTHOR
Graham Barr. Currently maintained by the Perl Porters. Please report all bugs to <perl5-porters@perl.org>. COPYRIGHT
Copyright (c) 1997-8 Graham Barr <gbarr@pobox.com>. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.8.0 2002-06-01 IO::Dir(3pm)