lsmod

List loaded kernel modules

low risk

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

Shows loaded kernel modules and their usage counts.

Examples
lsmod | grep -i nvmeCheck if a module is loaded · explain & risk-check →
Related
modprobe modinfo
Open the full explainer →More in System & Processes

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