first format, called "format 0", is the one used by GNU `tar' versions
up to 1.15.1. The second format, called "format 1" is an extended
version of this format, that contains more metadata and allows for
further extensions. It was used by version 1.15.1. Starting from
first format, called "format 0", is the one used by GNU `tar' versions
up to 1.15.1. The second format, called "format 1" is an extended
version of this format, that contains more metadata and allows for
further extensions. It was used by version 1.15.1. Starting from