grep/sed-esque utility to find/replace tags in HTML/xml documents::

 > HTMLgrep title http://k0s.org/
 Jeff's increasingly entropic webpage
 > HTMLgrep title http://negativelee.com/posts/2013/03/the-straw-man-argument.html
 > echo $? # element not found
 1
 > HTMLsed -i title the-straw-man-argument.html#h1
 > HTMLgrep title the-straw-man-argument.html
 The Straw Man Argument