Get your local IP regardless of your network interface

ifconfig|sed '/inet/!d;/127.0/d;/dr:\s/d;s/^.*:\(.*\)B.*$/\1/'
Shows only IP-addresses of ifconfig except I fixed the script to work on more systems and configs short info /inet/!d; #grep inet /127.0/d; # grep -v 127.0 /dr:\s/d; # grep -v dr: s/^.*:\(.*\)B.*$/\1/ # remove everything exept between : and B

By: marssi
2010-12-01 21:08:29

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What Others Think

Nice, this is much better than my command, though a little cryptic to a sed newbie like myself.
LinuxMan · 568 weeks and 6 days ago
On my Debian PCs the marssi method doesn't report the local IP but the Bcast
rollopack · 568 weeks and 6 days ago
I tested it on debian lenny and sid, both works for me. If you wanna try this one on your system rollopack? ifconfig|sed '/inet/!d;/127.0/d;/dr:\s/d;s/^.*:\(.*\)B.*$/\1/' The problem with my suggestion is that if you use it in a script and put it in a variable, the variable might have extra whitespaces in the end.
marssi · 568 weeks and 6 days ago
ifconfig|sed '/inet/!d;/127.0/d;/dr:\s/d;s/^.*:\(.*\)\s.*$/\1/' Which is the Bcast address.
carlesso · 568 weeks and 6 days ago
ifconfig|sed '/inet/!d;/127.0/d;/dr:\s/d;s/^.*:\(.*\)B.*$/\1/' Ok - IP address ifconfig|sed '/inet/!d;/127.0/d;/dr:\s/d;s/^.*:\(.*\)\s.*$/\1/' Fail - Bcast address
rollopack · 568 weeks and 2 days ago
marssi · 568 weeks 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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