On Tue, Aug 15, 2017 at 03:14:02PM +0100, Darac Marjal wrote:
> Have you looked at "ip -s link"? It's not quite as easy to parse as "netstat
> -in", but all the information's there.
Actually, "ip -o link" is a step in the right direction:
wooledg:~$ ip -o link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode
DEFAULT group default qlen 1\ link/loopback 00:00:00:00:00:00 brd
00:00:00:00:00:00
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP
mode DEFAULT group default qlen 1000\ link/ether a0:8c:fd:c3:89:e0 brd
ff:ff:ff:ff:ff:ff
Still requires multiple steps to extract the interface names (unless
you use awk, or some other language with wide field delimiters), and
still not as nice as ps h -o ppid "$pid", but I guess we won't ever get
anything nicer.
wooledg:~$ ip -o link | awk -F": " '{print $2}'
lo
eth0
The only other scripting language I know that can do splitting with
multi-character separators is perl.
wooledg:~$ ip -o link | perl -ne '@x=split(/: /); print $x[1], "\n"'
lo
eth0
Bash and Tcl can't do it, at least not with their native toolsets.
I don't know python or ruby or any others.
