ifconfig|sed '/inet/!d;/127.0/d;/dr:\s/d;s/^.*:\(.*\)B.*$/\1/'

Get your local IP regardless of your network interface

Shows only IP-addresses of ifconfig except 127.0.0.0/8. 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

1
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 · 389 weeks and 4 days ago
On my Debian PCs the marssi method doesn't report the local IP but the Bcast
rollopack · 389 weeks and 4 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 · 389 weeks and 4 days ago
ifconfig|sed '/inet/!d;/127.0/d;/dr:\s/d;s/^.*:\(.*\)\s.*$/\1/' 192.168.0.255 Which is the Bcast address.
carlesso · 389 weeks and 3 days ago
ifconfig|sed '/inet/!d;/127.0/d;/dr:\s/d;s/^.*:\(.*\)B.*$/\1/' 192.168.1.3 Ok - IP address ifconfig|sed '/inet/!d;/127.0/d;/dr:\s/d;s/^.*:\(.*\)\s.*$/\1/' 192.168.1.255 Fail - Bcast address
rollopack · 388 weeks and 6 days ago
thx
marssi · 388 weeks and 4 days ago

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