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Extract URLs from HTML code using sed

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Top Forums Shell Programming and Scripting Extract URLs from HTML code using sed
# 8  
Old 11-29-2009
Hi.

You can use lynx to do most of the hard work:
Code:
#!/usr/bin/env bash

# @(#) s3	Demonstrate extraction of links with "lynx".

echo
set +o nounset
LC_ALL=C ; LANG=C ; export LC_ALL LANG
echo "Environment: LC_ALL = $LC_ALL, LANG = $LANG"
echo "(Versions displayed with local utility \"version\")"
version >/dev/null 2>&1 && version "=o" $(_eat $0 $1) lynx 
set -o nounset
echo

URL="http://www.google.com/search?q=chondroitin&num=100&start=200"

echo " Looking at URL: $URL"

echo
echo " Results:"
lynx -dump -listonly -hiddenlinks=ignore "$URL" |
grep -i -v google |
sed -e 's/^[ 	]*[0-9.]*[ 	]*//' > t1

echo " Extracted about $( wc -l <t1 ) non-google links; first 10:"
head -10 t1

exit 0

producing:
Code:
% ./s3

Environment: LC_ALL = C, LANG = C
(Versions displayed with local utility "version")
OS, ker|rel, machine: Linux, 2.6.26-2-amd64, x86_64
Distribution        : Debian GNU/Linux 5.0 
GNU bash 3.2.39
Lynx Version 2.8.7dev.9 (27 Apr 2008)

 Looking at URL: http://www.google.com/search?q=chondroitin&num=100&start=200

 Results:
 Extracted about 157 non-google links; first 10:

References

http://www.wisegeek.com/what-is-chondroitin.htm
http://74.125.95.132/search?q=cache:ZwdfFnJUbecJ:www.wisegeek.com/what-is-chondroitin.htm+chondroitin&cd=201&hl=en&ct=clnk&gl=us&ie=UTF-8
http://shaokang2002.en.busytrade.com/products/info/24144/_Chondroitin_sulphate.html
http://74.125.95.132/search?q=cache:B32adgCixNAJ:shaokang2002.en.busytrade.com/products/info/24144/_Chondroitin_sulphate.html+chondroitin&cd=202&hl=en&ct=clnk&gl=us&ie=UTF-8
http://www.ebmonline.org/cgi/content/abstract/226/2/144
http://www.ebmonline.org/cgi/content/abstract/230/4/255
http://linkinghub.elsevier.com/retrieve/pii/S0255270106002182

Some clean-up is done by getting rid of google references, and removing the initial whitespace and integer on each line ... cheers, drl
# 9  
Old 11-29-2009
Try this awk solution
Code:
wget -q -U "Mozilla/5.001" -O - "http://www.google.com/search?q=searchphrase&num=100&start=200" | awk -F\" '{for(i=0;++i<=NF;){if($i ~ /^http/ && $i !~ "google\|74.125.95"){print $i}}}'

Last edited by danmero; 11-29-2009 at 12:24 PM.. Reason: Filter out google links
# 10  
Old 11-29-2009
gawk
Code:
wget -q -U "Mozilla/5.001" -O - "http://www.google.com/search?q=searchphrase&num=100&start=200" | awk -vRS="</a>" '
{
  gsub(/.*<a +href=\042/,"")
  gsub(/\042.*/,"")
  print 
}'

# 11  
Old 11-29-2009
Or:

Code:
wget -q -U "Mozilla/5.001" -O - 'http://www.google.com/search?q=searchphrase&num=100&start=200' | 
  perl -lne'
    print$1while/<\s*a\s+href\s*=\s*["\047]([^"\047]+)/ig
    '

# 12  
Old 11-30-2009
Hello, and thx at all for so much replies !

@ ghostdog74 and radoulov
i get all links(all what apears after href=" in code) by using yours solutions, but i need just search results.

@ danmero and drl
your scripts produce more usefull results, but google and google-cache urls must be keept out.

KenJackson's brings just 5 lines some code, sory, where are links ?Smilie

and Scrutinizer's solution ist the best presented here. Its simply and it works.
Code:
wget -q -U "Mozilla/5.001" -O - "http://www.google.com/search?q=searchphrase&num=100&start=200" | \
grep -o '<a href="http[^"]*"'|grep -v 'search?q=cache:'|grep -v '\.google\.'|sed 's/<a href="//;s/"$//'

Some filtering is needed but its ok.

anyone to make his solution more simplier ? Smilie


# 13  
Old 11-30-2009
Quote:
Originally Posted by L0rd
@ danmero and drl
your scripts produce more usefull results, but google and google-cache urls must be keept out.
Code:
# wget -q -U "Mozilla/5.001" -O - "http://www.google.com/search?q=searchphrase&num=100&start=200"|awk -F\" '{for(i=0;++i<=NF;){if($i ~ /^http/ && $i !~ "google\|cache:"){print $i}}}'

And the output is(first and last 10 records):
Code:
http://www.youtube.com/results?q=searchphrase&num=100&um=1&ie=UTF-8&sa=N&hl=en&tab=w1
http://www.christopherwardforum.com/viewtopic.php?f=3&t=372
https://www.unix.com/shell-programming-scripting/113921-getting-15-characters-after-search-phrase.html
http://www.zeromillion.com/srs-search-phrase
http://www.fwicki.com/fwickis/science/Humanities
http://www.articlealley.com/tags-9091.html
http://www.workz.com/content/view_content.html?section_id=466&content_id=6151
http://www.onlinemarketingelite.com/tag/search-phrase/
http://www.discoveres.com/search-phrase_SRS/
http://www.articlesfactory.com/search/Search%20Phrase/
......
http://www.learninghownow.com/blog/tag/search-phrase/
http://www.quakerranter.org/tag/search%20phrase
http://forums.digital-m.co.za/showthread.php?t=73
http://drupal.org/node/527084
http://www.smartertools.com/forums/ThreadNavigation.aspx?PostID=57990&NavType=Previous
http://www.tversoft.com/computer/search-phrase.html
http://www.hotfroguk.co.uk/Companies/Search-Phrase-Builder
http://search.infospace.com/ispace/ws/redir/qcat=News/qcoll=relevance/qkw=Enter%20A%20Search%20Phrase/rfcp=RightNav/rfcid=302364/_iceUrlFlag=11?_IceUrl=true
http://www.stumbleupon.com/stumbler/kaylavincent/tag/search-phrase/
http://en.drigger.com/e/1012902/obscure_search_phrase

# 14  
Old 12-01-2009
Quote:
Originally Posted by L0rd
KenJackson's brings just 5 lines some code, sory, where are links ?Smilie
I didn't give a complete solution, that's why I called it a starter and referenced the looping.

I am awed by the power of sed. I routinely use it's regular expression capability, but I rarely use hold buffer and looping command. It has been my goal for some time to become skilful at using these. Your question would have been the perfect opportunity for me to dig in and come up with a solution that demonstrates that power. But I flat did not have the time then, and it looks like you have a solution now that you find satisfying. I'll work on it off-line.

Quote:
Originally Posted by L0rd
and Scrutinizer's solution ist the best presented here. Its simply and it works.
Yeah, I've noticed Scrutinizer writes some good and straight-forward code. Stick with him.
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