arp

Show/manipulate the ARP cache

low risk

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

Shows IP-to-MAC mappings; `ip neigh` replaces it.

Examples
arp -anShow ARP cache · explain & risk-check →
Related
ip
Open the full explainer →More in Networking

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