systemd-analyze

Analyze boot and unit timing

low risk

interactive breakdown — edit the command and press Explain
$ 
What it does

Shows boot time and unit dependencies. See the flags and examples below, and run `man systemd-analyze` for the full reference.

Examples
systemd-analyze blameSlowest units · explain & risk-check →
systemd-analyze security nginxHardening score · explain & risk-check →
Related
systemctl
Open the full explainer →More in Web & Services

Reference text is hand-written and may be incomplete — check man systemd-analyze for your version. Test destructive commands on a non-production system first.