Parsing data from ifconfig with awk or sed?

Question

I am trying to parse some data from ifconfig output with sed, but I am not able to do it correctly. I want the command to extract just the number I am after.

For exa

Answer 1

IMHO there is no standard for the ifconfig - output. It (may) change from system to system and from release to release.

If I were you, I would go for the /sys file system. You get all the information also from there - without the need of post-processing.

$ cat /sys/class/net/eth0/statistics/rx_bytes
37016050