Fetch the Gateway Ip Address

netstat -nr | awk 'BEGIN {while ($3!="0.0.0.0") getline; print $2}'

This is to fetch the Gateway Ip Address of a machine. Use the below format to put the value in a variable if you wish to find the gateway ip in a script GATEWAY=$(netstat -nr | awk 'BEGIN {while ($3!="0.0.0.0") getline; print $2}')

By: freethinker

2010-03-07 01:47:55

awk netstat

2 Alternatives + Submit Alt

Fetch the Gateway Ip Address

Better use iproute2 !
This is sample output - yours may be different.
2

ip route list match 0.0.0.0/0 | cut -d " " -f 3

BaS · 2010-03-07 15:41:18 2
Fetch the Gateway Ip Address

same thing without loop ;)
This is sample output - yours may be different.
0

/sbin/route -n | grep "^0\.0\.0\.0" | awk '{ print $2 }'

BorneBjoern · 2010-03-07 13:59:57 4

What Others Think

Well unfortunately this did not work on my BSD box... but you could us this instead. For FreeBSD either of these will work. awk -F '"' '/defaultrouter/{print $2}' /etc/rc.conf netstat -nr | awk '/default/{ print $2}' Now on Mac OS X it get's a little trickier because IPv6 is enabled by default. The following works for me. netstat -nr | awk '/default/{ print $2;exit}' Oh on FreeBSD there's a third option if your are running bash but it can get messy. This reads the file into the shell as an include script Remember bash is not installed by default on and BSD. . /etc/rc.conf echo $defaultrouter Cheers, Mikel King

mikelking · 690 weeks and 5 days ago

Pretty cool, I should have actually used the subject line "Fetch the Gateway Ip Address on Linux" ...

freethinker · 690 weeks and 5 days ago

Thanks a lot for sharing the steps to Fetch the Gateway Ip Address. I tried out the command you have shared here and It helped me a lot and was really practical. Do share more such interesting and helpful contents diamond rings

Juvanta · 48 weeks and 6 days ago

rahimhh21 · 39 weeks and 1 day ago

Perfecthomepugs · 30 weeks and 3 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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