systemd-analyze plot > plot.svg

systemctl list-units --type=service

>logs

ls -l/var/log
less /var/log/apt/history.log

systemd-analyze 

systemd-analyze blame | head -n 10 > systemd-blame.cmd

systemctl list-units --type=target

systemctl show-environment

systemd-analyze critical-chain
systemd-analyze critical-chain | grep target

ls /etc/systemd/system
ls /etc/systemd/system/multi-user.target.wants/

0entre
1Standard
2erreur

cron: intervalle régulier
cron.service