[mdlug-discuss] Ubuntu 17.04

[Brandon Fotiu]

As root, try the following. Also "$ sudo -s" will give you a root shell
so you don't have to do every command with sudo.

Showing interfaces:
# ip address show
OR
# ip a s 

this gives me a listing of my loopback and only interface on one of my
VMs running CentOS7

Stopping an interface (from
https://serverfault.com/questions/34899/correct-way-of-bringing-network-interface-down-in-linux):

# ip del "interface IP address" dev [interface name]

Adding an interface SHOULD be:

# ip add "valid IP address" dev [interface name]

ifconfig used to be the script for this behaviour, I'm not sure why it's
not in Ubuntu 17.04.

--Brandon Fotiu
+1.248.396.2431
KE8DVY

On , Drew wrote:

 Okay I got ip and grep and cut to give me the names. But now I'm
 having another problem. When I give the command

 for I in `sudo ip address show | grep '^[0-9]' | cut -d ':' | cut -c 2
 | tail -2`
 do
 echo $I
 sudo ifquery $I
 done

 I get
 enp9s0
 Unknown interface enp9s0
 wlp12s0b1
 Unknown interface wlp12s0b1

 ip is finding them. But ifup\ifdown\ifquery isn't.
 Why? 
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