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@mhoye

`ip -br a` is probably close enough to what you want.

if you know the interface name you can zero-in on it with:

`ip -br a s eth0`

Thing is, an interface can have multiple IPv4 and IPv6 addresses, obviously. In other words, "Linux machine's IP address" is just not clear enough a query to get a clear answer. You kind of need to narrow it down *somehow*, and that will be very dependent on the specific context of what you're trying to do…