Which interface does a specific IP address will get routed over?

Question

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Is there a way to determine which netdev or IP link interface that a given IP address will route over … in bash/shell language?

This is not about what an IP address is, given a network device name.

Given a destination IP address, bash would automagically determine (with OS assist from its internal IP route table, netstat -i -n ) in printing the network device name.

Answer 1

ip route get is what you're looking for; maybe it's ip route show to , depending on whether you checking should be allowed to change the routing state.

See man ip-route for more details.