Delete strings from an html file containing a pattern using unix commands

I have a messy html that looks like this:

<div id=":0.page.0" class="page-element" style="width: 1620px;">
 <div>
  <img src="viewer_files/viewer_004.png" class="page-image" style="width: 800px; height: 1131px; display: none;">
  <img src="viewer_files/viewer_005.png" class="page-image" style="width: 1600px;">
 </div>
</div>// this repeats 100+ times with different 'src' attributes

Now this is all one line actually (i have formatted in multiple lines for easy readibility). I am trying to remove all <img> tags that have display:none; set in the inline css. Is it possible to use sed/awk or some other unix command to achieve this? I think if it were a well indente开发者_如何转开发d html document, it would've been easy.

HTML and regexes are a notoriously bad match, so you probably want something that is HTML-aware. I'd probably go for something like TagSoup, but there are no doubt other options that are more shell-friendly, or suitable for any favourite scripting language you may have.

I would use either Twig or XMLStarlet to do this kind of processing. A lot more reliable than sed/awk/grep. Since your pattern is regular and repeating, they would work too.

sed 's/<img.*display: none;[^>]>//g' file

sed -e "s/<img[^>]*display: none;[^>]*>//g" filein

A quick explanation about sed :

s stands for substitution / are delimiters

s means that the first field will be a pattern to be search, that will be replaced by the second one. The last one are options. g means global (replace it many times if many matches are found).

to replace inplace : sed -i -e "..."

That would do it

sed -e "s@<img.*display: none;.*>@@g" FILINAME

Sed has several commands, but most people only learn the substitute command: "s". A useful command deletes every line that matches the restriction: "d".

sed -e "/<img[^>]*display: none;[^>]*>/d" File 

Be carreful it's delete entire line.