man tarcat - tarcat(1) - concatenates the pieces of a GNU tar multi-volume archive - manpage.io
tarcat(1) - concatenates the pieces of a GNU tar multi-volume archive
tarcat files ...
The tarcat command simply concatenates the files from a GNU tar multi-volume archive into a single tar archive.
The tarcat script was written by Bruno Haible <firstname.lastname@example.org> and Sergey Poznyakoff <email@example.com>.
This document was written by Bdale Garbee <firstname.lastname@example.org> for Debian.