So I’m working on a server from home.
I do a cat /sys/class/net/eth0/operstate
and it says unknown
despite the interface being obviously up, since I’m SSH’ing into the box.
I try to explicitely set the interface up to force the status to say up
with ip link set eth0 up
. No joy, still unknown
.
Hmm… maybe I should bring it down and back up.
So I do ip link set eth0 down
and… I drive 15 miles to work to do the corresponding ip link set eth0 up
50 years using Unix and I’m still doing this… 😥
Did this once on a router in a datacenter that was a flight away. Have remembered to set the reboot in future command since. As I typed the fatal command I remember part of my brain screaming not to hit enter as my finger approached the keyboard. 🤦♂️
That’s not a bad idea actually. I’ll have to reuse that one. Thanks!
This.
Do it. This saved my life on more than one occasion.
You’ll think “nah, it’ll be fine” and then at 11pm when your brain’s fried on vending machine coffee you’ll be glad that you did it… 3 times over…