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Full Discussion: Multi html download.
Top Forums Shell Programming and Scripting Multi html download. Post 302738079 by Corona688 on Friday 30th of November 2012 10:15:20 AM
Old 11-30-2012
Quote:
Originally Posted by bipinajith
Code:
while read URL
do
    wget "$URL" >> download.txt # Downloading URL using wget & appending it to file: download.txt
done < urls_list.dat            # Reading from a file: urls_list.dat which has list of URLs

Good use of while read. You can redirect the entire loop instead of reopening download.txt 1000 times though:
Code:
while read line
do
        wget ...
done > download.txt

wget also has some features which make a loop unnecessary though Smilie

wget is able to read a list of files with -i. The -nv option is also useful, to make it still print completed files without printing all the complicated junk wget usually does.

Code:
wget -nv -i urls_list.dat > download.txt

This should be much faster than calling wget 1000 times since it is able to re-use the same connection if it's connecting to the same site. Concurrency may not be necessary ( and may not be desirable in many cases -- how fast is your connection? ) but if it is, I'd split the list into parts and use wget -i on those parts.
 

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httpindex(1)						      General Commands Manual						      httpindex(1)

NAME
httpindex - HTTP front-end for SWISH++ indexer SYNOPSIS
wget [ options ] URL... 2>&1 | httpindex [ options ] DESCRIPTION
httpindex is a front-end for index++(1) to index files copied from remote servers using wget(1). The files (in a copy of the remote direc- tory structure) can be kept, deleted, or replaced with their descriptions after indexing. OPTIONS
wget Options The wget(1) options that are required are: -A, -nv, -r, and -x; the ones that are highly recommended are: -l, -nh, -t, and -w. (See the EXAMPLE.) httpindex Options httpindex accepts the same short options as index++(1) except for -H, -I, -l, -r, -S, and -V. The following options are unique to httpindex: -d Replace the text of local copies of retrieved files with their descriptions after they have been indexed. This is useful to display file descriptions in search results without having to have complete copies of the remote files thus saving filesystem space. (See the extract_description() function in WWW(3) for details about how descriptions are extracted.) -D Delete the local copies of retrieved files after they have been indexed. This prevents your local filesystem from filling up with copies of remote files. EXAMPLE
To index all HTML and text files on a remote web server keeping descriptions locally: wget -A html,txt -linf -t2 -rxnv -nh -w2 http://www.foo.com 2>&1 | httpindex -d -e'html:*.html,text:*.txt' Note that you need to redirect wget(1)'s output from standard error to standard output in order to pipe it to httpindex. EXIT STATUS
Exits with a value of zero only if indexing completed sucessfully; non-zero otherwise. CAVEATS
In addition to those for index++(1), httpindex does not correctly handle the use of multiple -e, -E, -m, or -M options (because the Perl script uses the standard GetOpt::Std package for processing command-line options that doesn't). The last of any of those options ``wins.'' The work-around is to use multiple values for those options seperated by commas to a single one of those options. For example, if you want to do: httpindex -e'html:*.html' -e'text:*.txt' do this instead: httpindex -e'html:*.html,text:*.txt' SEE ALSO
index++(1), wget(1), WWW(3) AUTHOR
Paul J. Lucas <pauljlucas@mac.com> SWISH++ August 2, 2005 httpindex(1)
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