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Top Forums Shell Programming and Scripting File downloading help in perl Post 302540609 by srijith on Thursday 21st of July 2011 07:08:04 AM
Old 07-21-2011
File downloading help in perl

Im trying to write a perl code to do the following task.

I have a website which is located in a diffirent country.
I want to download a file from that site everyday.
The file name keeps on changing everyday.
say the file name is CTP-latest-5.3.0.37.iso
next day it may change to "CTP-latest-5.3.0.38.iso" or remain same.

I want to download only if the version number (ie. 38 in above example("38.iso") is not the same from last sucessful download or else dont download.

Im very poor in perl, can someone help me on this ?

i tried with
Code:
#!/usr/bin/perl
 
use LWP::Simple;
 
#-- fetch the zip and save it as perlhowto.zip
my $status = getstore("http://star.mywebsite/CTP-LATEST-4.4.4.37.iso", "CVP-LATEST-5.3.0.37.iso");
 
if ( is_success($status) )
{
  print "file downloaded correctly\n";
}
else
{
  print "error downloading file: $status\n";
}


This works fine in downloading the file, But I need to have a check on version number. So I want to download only if the version number has been changed from the version number of previous successful download.

one idea is if we want to download "CTP-LATEST-4.4.4.37.iso" but the file is not available the download fails and we catch the error and we dont increment the value "37" however we are trying with the same value ("37") tommorow. so if ....37.iso is available tommorow then we download and increment the value 37 to 38.iso and store it.


thank you for your time.

Last edited by srijith; 07-21-2011 at 09:35 AM..
 

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IP::Country::MaxMind(3) 				User Contributed Perl Documentation				   IP::Country::MaxMind(3)

NAME
IP::Country::MaxMind - Look up country by IP Address SYNOPSIS
use IP::Country::MaxMind; my $gi = IP::Country::MaxMind->new(GEOIP_STANDARD); # look up IP address '65.15.30.247' # returns undef if country is unallocated, or not defined in our database my $cc1 = $gi->inet_atocc('65.15.30.247'); my $cc2 = $gi->inet_atocc('yahoo.com'); DESCRIPTION
This module adapts the Geo::IP module to use the same interface as the IP::Country modules; thus allowing users to easily switch between using the two underlying databases. DATABASE UPDATES
Free monthly updates to the database are available from http://www.maxmind.com/download/geoip/database/ If you require greater accuracy, MaxMind offers a Premium database on a paid subscription basis. The author of this module is in no way associated with MaxMind. CLASS METHODS
$gi = IP::Country::MaxMind->new( $flags ); Constructs a new IP::Country::MaxMind object with the default database located inside your system's datadir, typically /usr/local/share/GeoIP/GeoIP.dat. Flags can be set to either GEOIP_STANDARD, or for faster performance (at a cost of using more memory), GEOIP_MEMORY_CACHE. When using memory cache you can force a reload if the file is updated by setting GEOIP_CHECK_CACHE. $gi = IP::Country::MaxMind->open( $database_filename, $flags ); Constructs a new Geo::IP object with the database located at $database_filename. OBJECT METHODS
All object methods are designed to be used in an object-oriented fashion. $result = $object->foo_method($bar,$baz); Using the module in a procedural fashion (without the arrow syntax) won't work. $cc = $gi->inet_atocc(HOSTNAME) Takes a string giving the name of a host, and translates that to an two-letter country code. Takes arguments of both the 'rtfm.mit.edu' type and '18.181.0.24'. If the host name cannot be resolved, returns undef. If the resolved IP address is not contained within the database, returns undef. $cc = $gi->inet_ntocc(IP_ADDRESS) Takes a string (an opaque string as returned by Socket::inet_aton()) and translates it into a two-letter country code. If the IP address is not contained within the database, returns undef. $cc = $gi->db_time() Returns zero. For compatibility only. COPYRIGHT
Copyright (C) 2002,2003 Nigel Wetters Gourlay. All Rights Reserved. NO WARRANTY. This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.18.2 2006-04-06 IP::Country::MaxMind(3)
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