아무튼, cron 같은데서 돌리도록 하기 위해 -y옵션을 주고 하면 무조건 yes를 한다.
-y
--yes
--assume-yes
Automatic yes to prompts; assume "yes" as answer to all prompts and run non-interactively. If an undesirable situation, such as changing a held package or removing an essential package occurs then apt-get will abort. Configuration Item: APT::Get::Assume-Yes.
$ dmesg | tail -15
[ 325.324377] Ethernet Channel Bonding Driver: v3.5.0 (November 4, 2008)
[ 325.324388] bonding: Warning: either miimon or arp_interval and arp_ip_target module parameters must be specified, otherwise bonding will not detect link failures! see bonding.txt for details.