pup
Parsing HTML at the command line
...CSS selectors have a group of specifiers called "pseudo classes" which are pretty cool. pup implements a majority of the relevant ones them. When combining selectors, the HTML nodes selected by the previous selector will be passed to the next ones. Non-HTML selectors which effect the output type are implemented as functions which can be provided as a final argument. Print the values of all attributes with a given key from all selected nodes.