Monitor last lines of messages file tail --follow=name /var/log/messages Output log in a colored fashion grc tail --follow=name /var/log/messages Monitor log for Routing Protocols Monitor log for OSPF journalctl --follow --boot /usr/lib/frr/ospfd Monitor log for OSPF for IPv6 journalctl --follow --boot /usr/lib/frr/ospf6d Monitor log for BGP journalctl --follow --boot /usr/lib/frr/bgpd Monitor log for RIP journalctl --follow --boot /usr/lib/frr/ripd Monitor log for RIPng journalctl --follow --boot /usr/lib/frr/ripngd Monitor log for static route journalctl --follow --boot /usr/lib/frr/staticd Monitor log for Multicast protocol journalctl --follow --boot /usr/lib/frr/pimd Monitor log for ISIS journalctl --follow --boot /usr/lib/frr/isisd Monitor log for NHRP journalctl --follow --boot /usr/lib/frr/nhrpd Monitor log for BFD journalctl --follow --boot /usr/lib/frr/bfdd Monitor log for MPLS journalctl --follow --boot /usr/lib/frr/ldpd