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Commands tagged ifconfig from sorted by
Terminal - Commands tagged ifconfig - 51 results
ifconfig eth0 | grep 'inet addr' | cut -d ':' -f 2 | cut -d ' ' -f 1
2010-06-26 22:36:21
User: atoponce
Functions: cut grep ifconfig
Tags: ifconfig

Simple and easy. No regex, no search and replace. Just clean, built-in tools.

ifconfig -a| awk '/^wlan|^eth|^lo/ {;a=$1;FS=":"; nextline=NR+1; next}{ if (NR==nextline) { split($2,b," ")}{ if ($2 ~ /[0-9]\./) {print a,b[1]}; FS=" "}}'
2010-04-15 04:34:28
User: alf
Functions: awk ifconfig
Tags: ifconfig awk IP

Interfaces like lo can be omitted from the beginning, there are probably better ways of doing this, i'm a noob at awk.

ip link show
2010-03-01 20:10:27
User: d34dh0r53
Functions: link
Tags: ifconfig grep

I prefer the ip command to ifconfig as ifconfig is supposedly going to be deprecated. Certain IP address aliases can only be seen with the ip command (such as the ones applied by RHCS).

ifconfig | awk '/HWaddr/ { print $NF }'
ifconfig -a| grep -o -E '([[:xdigit:]]{1,2}:){5}[[:xdigit:]]{1,2}'
2010-02-27 14:30:43
User: evenme
Functions: grep ifconfig
Tags: ifconfig grep

Get mac address listed for all interfaces.

netstat -in
for i in `lanscan -i | awk '{print $1}'` ; do ifconfig $i ; done
perl -e '$_=`ifconfig eth0`;/\d+.\d+.\d+.\d+ /; print $&,"\n";'
2009-12-05 14:24:48
Functions: perl

If you are interested in interfaces other than eth0 you will need to change eth0 to your interface name.

You could use this mammoth to nab the ip4 addresses of all your interfaces

perl -e '@_=`ifconfig -a`; sort(@_); foreach(@_) { /(inet addr\:)(\d+.\d+.\d+.\d+ )/; $_=$2; @uniq=grep($_ ne $prev && (($prev) = $_), @_);} print join "\n",@uniq,"\n"; '

it seems silly to have all this code when the following will work fine

ifconfig -a | grep "inet " | awk -F":" ' { print $2 } ' | cut -d " " -f1

ifconfig -a| awk 'BEGIN{FS="[ :]+"} /Bcast/{print $4}'
ifconfig -a|grep Bcast:|cut -d\: -f2|awk '{print $1}'
ifconfig | awk '/HW/ {print $5}'
2009-11-05 18:00:50
User: Cont3mpo
Functions: awk ifconfig

Simple MAC adrress, thanks to ifconfig.

ifconfig eth1 | grep inet\ addr | awk '{print $2}' | cut -d: -f2 | sed s/^/eth1:\ /g
2009-11-03 19:26:40
User: TuxOtaku
Functions: awk cut grep ifconfig sed

Sometimes, you don't really care about all the other information that ifconfig spits at you (however useful it may otherwise be). You just want an IP. This strips out all the crap and gives you exactly what you want.

ifconfig -a | perl -nle'/(\d+\.\d+\.\d+\.\d+)/ && print $1'
2009-07-31 09:49:17
User: sneaker
Functions: ifconfig perl

works on Linux and Solaris. I think it will work on nearly all *nix-es

ifconfig | awk '/ddr:[0-9]/ {sub(/addr:/, ""); print $2}'
2009-07-31 09:30:54
User: danny_b85
Functions: awk ifconfig
Tags: Linux ifconfig

The initial version of this command also outputted extra empty lines, so it went like this:

This happened on Ubuntu, i haven't tested on anything else.

ipconfig getpacket en0 | grep yi| sed s."yiaddr = "."en0: ". ipconfig getpacket en1 | grep yi| sed s."yiaddr = "."en1: ".
ifconfig | awk -F':| +' '/ddr:/{print $4}'
2009-07-25 22:51:08
User: 0x89
Functions: awk ifconfig
Tags: Linux ifconfig

and, a lot uglier, with sed:

ifconfig | sed -n '/inet addr:/s/[^:]\+:\(\S\+\).*/\1/p'


Wanted to be shorter than the perl version. Still think that the perl version is the best..

ifconfig | grep "inet [[:alpha:]]\+" | cut -d: -f2 | cut -d' ' -f2
2009-07-24 13:16:37
User: feraf
Functions: cut grep ifconfig
Tags: Linux ifconfig

Get the IP address of all your network cards.

ifconfig | grep "inet addr" | cut -d: -f2 | cut -d' ' -f1
ifconfig | perl -nle'/dr:(\S+)/ && print $1'
2009-07-23 09:33:31
User: xsawyerx
Functions: ifconfig perl

Fetches the IPs and ONLY the IPs from ifconfig. Simplest, shortest, cleanest.

Perl is too good to be true...

(P.S.: credit should go to Peteris Krumins at catonmat.net)

echo "-------------" >> nicinfo.txt; echo "computer name x" >> nicinfo.txt; ifconfig | grep status >> nicinfo.txt; ifconfig | grep inet >> nicinfo.txt; ifconfig | grep ether >> nicinfo.txt; hostinfo | grep type >> nicinfo.txt;
ifconfig eth0 down hw ether (newmacaddresshere) && ifconfig eth0 up && ifconfig eth0 (newipaddresshere) netmask up && /bin/hostname (newhostnamehere)
2009-06-04 20:25:49
User: localGhost
Functions: ifconfig

The command above has been changed due to very good constructive criticism - thanks x 2! This command can be used after acquiring mac's, ip's and hostname's or any of the above from a freshly scanned LAN. User must be root, and remember to change your settings on your network managing software manually (Fedc10 NetworkManager Applet 0.7.1 is mine) instead of 'auto DHCP'. You can also substitute eth0 for wlan0 etc - be good and ENJOY!

ifconfig en1 | awk '/inet / {print $2}' | mail -s "hello world" email@email.com
2009-04-28 06:01:52
User: rez0r
Functions: awk ifconfig mail

This is useful if you have need to do port forwarding and your router doesn't assign static IPs, you can add it to a script in a cron job that checks if you IP as recently changed or with a trigger script.

This was tested on Mac OSX.

/sbin/ifconfig -a | awk '/(cast)/ { print $2 }' | cut -d':' -f2 | head -1
while true; do X=$Y; sleep 1; Y=$(ifconfig eth0|grep RX\ bytes|awk '{ print $2 }'|cut -d : -f 2); echo "$(( Y-X )) bps"; done
alias showip="ifconfig eth0 | grep 'inet addr:' | sed 's/.*addr\:\(.*\) Bcast\:.*/\1/'"
2009-03-25 07:50:12
User: dizzgo
Functions: alias
Tags: ifconfig alias IP

parses the output of ifconfig to show only the configured ip address (in this case from interface eth0).

the regexp is quick'n'dirty im sure it can be done in a better way.

--> this alias does not show your "internet ip" when you're in a nat-environment