archlinux를 기본설치하면 cron이 설치되지 않는다.
cronie 를 설치할까하다, systemd/Timers 를 이용하여 매일 package를 업데이트하도록 설정한다.
[arch@seobi.gq system]$ cd /etc/systemd/system [arch@seobi.gq system]$ cat pacsyu.service [Unit] Description=package upgrade [Service] ExecStart=pacman -Syu --noconfirm && yes|pacman -Scc [arch@seobi.gq system]$ cat pacsyu.timer [Unit] Description=package upgrade timer [Timer] OnBootSec=1min OnCalendar=*-*-* 4:0:0 [Install] WantedBy=multi-user.target [arch@seobi.gq system]$ sudo systemctl enable pacsyu.timer [arch@seobi.gq system]$ sudo systemctl start pacsyu.timer [arch@seobi.gq system]$ systemctl list-timers NEXT LEFT LAST PASSED UNIT > Fri 2022-06-24 18:12:18 KST 8h left Thu 2022-06-23 18:12:18 KST 15h ago systemd-tmpfiles-clean.ti> Sat 2022-06-25 00:00:00 KST 14h left Fri 2022-06-24 00:00:38 KST 9h ago shadow.timer > Sat 2022-06-25 04:00:00 KST 18h left Fri 2022-06-24 09:46:33 KST 7min ago pacsyu.timer > 3 timers listed. Pass --all to see loaded but inactive timers, too.