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Top Forums Shell Programming and Scripting Text substitution & getting file name from url Post 302505614 by texttoolong on Thursday 17th of March 2011 12:22:41 PM
Old 03-17-2011
Text substitution & getting file name from url

hi, sorry if this seems trivial.

i have a file url.txt which consists of a list of urls (it was supposed to be my wget -i file). however, since the server from which i am trying to download uses redirect, wget dows not remeber the filename of ther original url will save to a file name which is unreadable. my solution is to use a script to read the urls line by line and to write a wget script command in to another text file todo.txt which i could then run as a script.

url.txt looks like
Code:
http://serverdoingstrangethings.com/file1.ext
http://serverdoingstrangethings.com/file2.ext

todo.txt should look like
Code:
wget http://serverdoingstrangethings.com/file1.ext -Ofile1.ext
wget http://serverdoingstrangethings.com/file2.ext -Ofile2.ext

(simplified, the actual wget-line will have a few more arguments)

after writing to the todo.txt the line in url.txt should be deleted.

i am a script newbie (i tried a few dos-batch and vba-tingies years ago) and am much to shy to post what I have written so for. my problem lies especialy with getting the file name from the url. could you help - i know i should be reading up on regular expressions and i certainly will, but could you point me in the right direction?

thank you so much,

thomas
 

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URI::URL(3)						User Contributed Perl Documentation					       URI::URL(3)

NAME
URI::URL - Uniform Resource Locators SYNOPSIS
$u1 = URI::URL->new($str, $base); $u2 = $u1->abs; DESCRIPTION
This module is provided for backwards compatibility with modules that depend on the interface provided by the "URI::URL" class that used to be distributed with the libwww-perl library. The following differences exist compared to the "URI" class interface: o The URI::URL module exports the url() function as an alternate constructor interface. o The constructor takes an optional $base argument. The "URI::URL" class is a subclass of "URI::WithBase". o The URI::URL->newlocal class method is the same as URI::file->new_abs. o URI::URL::strict(1) o $url->print_on method o $url->crack method o $url->full_path: same as ($uri->abs_path || "/") o $url->netloc: same as $uri->authority o $url->epath, $url->equery: same as $uri->path, $uri->query o $url->path and $url->query pass unescaped strings. o $url->path_components: same as $uri->path_segments (if you don't consider path segment parameters) o $url->params and $url->eparams methods o $url->base method. See URI::WithBase. o $url->abs and $url->rel have an optional $base argument. See URI::WithBase. o $url->frag: same as $uri->fragment o $url->keywords: same as $uri->query_keywords o $url->localpath and friends map to $uri->file. o $url->address and $url->encoded822addr: same as $uri->to for mailto URI o $url->groupart method for news URI o $url->article: same as $uri->message SEE ALSO
URI, URI::WithBase COPYRIGHT
Copyright 1998-2000 Gisle Aas. perl v5.18.2 2012-02-11 URI::URL(3)
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