parsing data with sed command

Question

Minha saída assim:

   <li><a href="/intl/id/download/">Bahasa Indonesia</a></li>
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        If your download didn’t start, <a href="https://cdn1.evernote.com/mac-smd/public/Evernote_RELEASE_7.1_456448.dmg">click here</a>.<br>
100 24789  100 24789    0     0  14560      0  0:00:01  0:00:01 --:--:-- 14564
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Eu quero extrair apenas https://cdn1.evernote.com/mac-smd/public/Evernote_RELEASE_7.1_456448.dmg com o comando sed

    

Answer 1

Apenas com sed como você queria:

sed -n '/cdn1/p' "$YOUR_FILE"| sed 's/^.*\(https.*dmg\).*//g'

Ou mais curto:

sed -n 's/^.*\(https.*dmg\).*//p' "$YOUR_FILE"
sed -n 's/^.*\(https.*\.[a-z]\{2,3\}\).*//p' "$YOUR_FILE"
sed -n 's/^.*\(https\?.*cdn1.*\.[a-z]\{2,3\}\).*//p' "$YOUR_FILE"

    

Answer 2

sed e semelhantes NÃO são as ferramentas certas para processar dados XML / HTML.
Use analisadores XML / HTML apropriados, como xmllint ou < strong> xmlstarlet .

Com xmllint você faria:

xmllint --html --xpath 'string(//a[text()="click here"]/@href)' input.html

A saída:

https://cdn1.evernote.com/mac-smd/public/Evernote_RELEASE_7.1_456448.dmg

• string(//a[text()="click here"]/@href) - a expressão xpath crucial para selecionar a tag cujo valor de texto é click here e obter representação de string de seu atributo href