менеджер пакетов для Debian (package manager for Debian)
Статус выхода (Exit)
0 The requested action was successfully performed. Or a
check or assertion command returned true.
1 A check or assertion command returned false.
2 Fatal or unrecoverable error due to invalid command-line
usage, or interactions with the system, such as accesses
to the database, memory allocations, etc.
