получение и установка атрибутов терминала, управление линией, получение и установка скорости передачи данных (get and set terminal attributes, line control, get and set baud rate)
Ошибки (баги) (Bugs)
On the Alpha architecture before Linux 4.16 (and glibc before
2.28), the XTABS value was different from TAB3 and it was ignored
by the N_TTY line discipline code of the terminal driver as a
result (because as it wasn't part of the TABDLY mask).
