EDIT: Just realized the request was about a Conky specific script after posting this Bash-based answer. Leaving it up here just in case it’s useful.
Hostname for a router? Pretty sure that is not possible because most gateways don’t have a hostname assigned or even give out their hostname. But you can get the IP address using route piped through grep and awk like this:
route | grep "default" | awk '{ print $2 }' That will cleanly give you the raw IP address of the router. Now if you wanted the MAC address just do this using arp and that command mixed in with grep and awk in there as well again:
arp -a | grep $(route | grep "default" | awk '{ print $2 }') | awk '{ print $4 }' And if you wanted to assign those values to Bash variables, just do this for the router IP address:
ROUTER_IP=$(route | grep "default" | awk '{ print $2 }') And do this for the MAC address:
ROUTER_MAC=$(arp -a | grep $(route | grep "default" | awk '{ print $2 }') | awk '{ print $4 }') And then you could use those assigned values by referring to $ROUTER_IP and $ROUTER_MAC. Like if you ran those two variable assignments just now just run these echo commands from the command line like this:
echo $ROUTER_IP echo $ROUTER_MAC