создавать списки аргументов и вызывать утилиту (construct argument lists and invoke utility)
Последствия ошибок (Consequences of errors)
If a command line meeting the specified requirements cannot be
assembled, the utility cannot be invoked, an invocation of the
utility is terminated by a signal, or an invocation of the
utility exits with exit status 255, the xargs utility shall write
a diagnostic message and exit without processing any remaining
input.
The following sections are informative.
