обмен переносными архивами (portable archive interchange)
Выходные файлы (Output files)
In read mode, the extracted output files shall be of the archived
file type. In copy mode, the copied output files shall be the
type of the file being copied. In either mode, existing files in
the destination hierarchy shall be overwritten only when all
permission (-p), modification time (-u), and invalid-value
(-oinvalid=) tests allow it.
In write mode, the output file named by the -f option-argument
shall be a file formatted according to one of the specifications
in the EXTENDED DESCRIPTION section, or some other
implementation-defined format.
