Debian 9 (Stretch) laptop, and attached external hard disk in enclosure.
How to use GNU ddrescue to copy folders or files from failed hard disk? (not the whole disk image). For example,
That isn't for what the GNU
ddrescue program is designed.
You can, however, make a copy of a specific partition, from which you want to copy the data, rescue the partition, and then mount it and copy the data from inside it to wherever you wish, I do that all the time, except I'm always copying the whole disks, which is only a small hassle when mounting it afterward.