Home / ubuntu / Questions / 1085789
Accepted
chris
Asked: 2018-10-22 00:03:06 +0800 CST

default route interface name

  • 772

I want the default interface name. How do I do this without perl?

ip route show to default | perl -pe's/^default via [0-9.]+ dev ([0-9a-z]+).*/$1/'

Is this working with other distributions also? There are names like ens3p0 or something like that.

scripts networking command-line

1 Answers

  1. Best Answer

    Try this command:

    ip route show to default | grep -Eo "dev\s*[[:alnum:]]+" | sed 's/dev\s//g'

    Information:

    • grep -Eo "dev\s*[[:alnum:]]+": Get the device name after the ord "dev".
    • sed 's/dev\s//g': Remove the leading space from the previous output.
    • 3