SED command

[big__ross]

Hi

I was hoping that someone could point me in the right direction as I am going around in circles. I want to extract the RX packet count value from ifconfig for the NIC called eth0.

The best I have is - ifconfig eth0 | sed -e 's/RX packets \(.*\)bytes/\1/'

The RX packet count value is present in between "RX packets " and "bytes". When I run the command above it ends up giving me the full ifconfig response but with the text "RX packets " and "bytes" removed.

Ross

 

[Rob]

Do you have to use sed? I'm sure there's an easy way to do it, but my fallback is always awk..

something like ifconfig eth0 | grep "RX pack" | awk '{print $3}'

grep: picks out the line we want
awk: printing the 3rd column

 

[big__ross]

That is much simpler! Thanks!

 

[rdrtx1]

ifconfig eth0 | awk '/RX pack/ {print $3}'