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Full Discussion: Find command takes long
Top Forums Shell Programming and Scripting Find command takes long Post 302949522 by Don Cragun on Sunday 12th of July 2015 02:02:26 PM
Old 07-12-2015
And if I use ls -ld for files that do not exist and for files that do exist, as in:
Code:
$ ls -ld /opt/app/var/dumps/mont
ls: /opt/app/var/dumps/mont: No such file or directory
$ ls -ld .
drwxr-xr-x@ 211 dwc  staff  7174 Jul 12 10:10 .
$

it clearly shows me that /opt/app/var/dumps/mont does not exist on my machine and clearly shows me that . does exist and shows me its mode. On the other hand, if I run the command:
Code:
$ find . -type d -name pdf -perm 600
$

I only know that there is no directory named pdf with mode 600 in the file hierarchy rooted in my current directory, while the command:
Code:
$ ls -ld pdf
drwxr-xr-x@ 14 dwc  staff  476 Aug 25  2013 pdf
$

clearly shows me that there is a directory named pdf in my current directory and that it has mode 755.

And, all of the above commands (except the find command) take less than a second.

So, less than a second to get the exact information you want versus more than two hours to maybe get the information you want. Tell me again why:
Code:
ls -ld /opt/app/var/dumps/mont

is a bad choice here to find out if there is a file named /opt/app/var/dumps/mont and, if there is, what type of file it is and what mode it has???
 

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Plack::Session::Store::File(3pm)			User Contributed Perl Documentation			  Plack::Session::Store::File(3pm)

NAME
Plack::Session::Store::File - Basic file-based session store SYNOPSIS
use Plack::Builder; use Plack::Middleware::Session; use Plack::Session::Store::File; my $app = sub { return [ 200, [ 'Content-Type' => 'text/plain' ], [ 'Hello Foo' ] ]; }; builder { enable 'Session', store => Plack::Session::Store::File->new( dir => '/path/to/sessions' ); $app; }; # with custom serializer/deserializer builder { enable 'Session', store => Plack::Session::Store::File->new( dir => '/path/to/sessions', # YAML takes it's args the opposite order serializer => sub { YAML::DumpFile( reverse @_ ) }, deserializer => sub { YAML::LoadFile( @_ ) }, ); $app; }; DESCRIPTION
This implements a basic file based storage for session data. By default it will use Storable to serialize and deserialize the data, but this can be configured easily. This is a subclass of Plack::Session::Store and implements its full interface. METHODS
new ( %params ) The %params can include dir, serializer and deserializer options. It will check to be sure that the dir is writable for you. dir This is the directory to store the session data files in, if nothing is provided then "/tmp" is used. serializer This is a CODE reference that implements the serialization logic. The CODE ref gets two arguments, the $value, which is a HASH reference to be serialized, and the $file_path to save it to. It is not expected to return anything. deserializer This is a CODE reference that implements the deserialization logic. The CODE ref gets one argument, the $file_path to load the data from. It is expected to return a HASH reference. BUGS
All complex software has bugs lurking in it, and this module is no exception. If you find a bug please either email me, or add the bug to cpan-RT. AUTHOR
Stevan Little <stevan.little@iinteractive.com> COPYRIGHT AND LICENSE
Copyright 2009, 2010 Infinity Interactive, Inc. <http://www.iinteractive.com> This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.12.4 2011-07-27 Plack::Session::Store::File(3pm)
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