유닉스 시스템의 기능들입니다...
예를 들어
echo "test_mail" | mail -s "test mail" iostream11 at channeli.net 그리고
크론을 이용해서 1분에 한번씩
ping 168.126.63.1
명령어 수행.--Hack!!Hack!!Hack!!Hack!!Hack!!Hack!!Hack!!Hack!!Hack!!Hack!!Hack!!
Hack!!Hack!!Hack!!Hack!!Hack!!Hack!!Hack!!Hack!!Hack!!Hack!!Hack!!
Hack!!Hack!!Hack!!Hack!!Hack!!Hack!!Hack!!Hack!!Hack!!Hack!!Hack!!
Hack!!Hack!!Hack!!Hack!!Hack!!Hack!!Hack!!Hack!!Hack!!Hack!!Hack!!
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요?
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