diff --git a/2025-10-31.md b/2025-10-31.md
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+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