As a note, in Gentoo they don't use underscores in package names, but they do use dashes. Therefore, the executable dd_rescue is packaged under dd-rescue and executable ddrescue is packaged under it's own name.
As a note, in Gentoo they don't use underscores in package names, but they do use dashes. Therefore, the executable dd_rescue is packaged under dd-rescue and executable ddrescue is packaged under it's own name.