Show HN: Pup – A command-line HTML parser

While reading the examples, I was surprised by the placement of the output redirection statement:<p><pre><code> $ pup &lt; robots.html title </code></pre> For some reason I thought that it must come last. Turns out that you can place it anywhere in the command! All these are equivalent in bash:<p><pre><code> $ pup title &lt; robots.html $ pup &lt; robots.html title $ &lt; robots.html pup title</code></pre>

&quot;I bet it&#x27;s node or ruby...&quot; Sees .go file extension. &quot;Oh nice, I never used a Go program before!&quot; But then I am supposed to &#x27;$ go get github.com&#x2F;ericchiang&#x2F;pup&#x27; to install it.<p>Why does everything nowadays have to come with its own package manager? I like the separation between my home directory and the &quot;system packages&quot;. I don&#x27;t want to have to care for and update and separately backup ~&#x2F;go, ~&#x2F;.npm and so on and so forth.<p>This looks super nice, I especially like the detailed list of examples. Sorry for the rant.<p>edit: There are binaries in the &quot;dist&quot; directory, the readme just did not mention them. Thanks!

Happy to see this. Pup will be a nice companion to HTTPie[1] as it also works with standard streams:<p><pre><code> $ http example.org | pup h1 text{} | http httpbin.org&#x2F;post </code></pre> [1] <a href="http://httpie.org/" rel="nofollow">http:&#x2F;&#x2F;httpie.org&#x2F;</a>

So getting the front page links is now as easy as:<p><pre><code> curl https:&#x2F;&#x2F;news.ycombinator.com | pup td.title a attr{href} </code></pre> Well done and thx for sharing.

Also see w3&#x27;s html-xml-utils. For example hxextract: <a href="http://www.w3.org/Tools/HTML-XML-utils/man1/hxextract.html" rel="nofollow">http:&#x2F;&#x2F;www.w3.org&#x2F;Tools&#x2F;HTML-XML-utils&#x2F;man1&#x2F;hxextract.html</a>

Really great seeing more and more CLI tools being built in Go. :-)

Wait, what&#x27;s the difference between this and using a Ruby&#x2F;Python&#x2F;etc REPL? In other words, normally to achieve this same result I would do:<p>irb -&gt; require &#x27;Nokogiri&#x27; and require &#x27;open-uri&#x27; -&gt; doc = Nokogiri::HTML(open(&#x27;<a href="http://www.google.com/&#x27;)" rel="nofollow">http:&#x2F;&#x2F;www.google.com&#x2F;&#x27;)</a>)<p>and no need to store the HTML via wget on my machine. Am I missing something?

Did you know of goquery (github.com&#x2F;PuerkitoBio&#x2F;goquery) ?

very nice. Could replace a bunch of awk and sed one off scripts floating around on people&#x27;s harddrives.

Is there any way to use pseudo-selectors, like :last-child?

cat and pup play well together.

Looks great! Thank you so much for making a Windows build.