libslopy-dev 7.6-3build1 (ppc64el binary) in ubuntu lunar

 slop (Select Operation) is an application that queries for a
 selection from the user and prints the region to stdout. It grabs the
 mouse and turns it into a crosshair, lets the user click and drag to
 make a selection (or click on a window) while drawing a pretty box
 around it, then finally prints the selection's dimensions to stdout.
 .
 This package contains the development files.