목록 확인, 등록/수정 ubuntu@first-instance:~$ crontab -l ubuntu@first-instance:~$ crontab -e 수행 로그 확인 ubuntu@first-instance:~$ cat /var/log/syslog | grep cron Jul 10 00:17:01 first-instance CRON[1673267]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly) Jul 10 01:17:01 first-instance CRON[1673679]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly) 주기 * * * * * 분(0-59) 시간(0-23) 일(1-31) 월..