Posted By

chrisaiv on 03/02/09


Tagged

grep cut ifconfig


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Figure out your Internal / External Ip Address using Terminal


 / Published in: Bash
 

URL: http://www.showipaddress.com/

This example uses the 'ifconfig' but with a little bit of grep to weed out the crap

  1. #1. Use ifconfig and pipe ( | ) it into grep which will search for the 'inet' field
  2. #2. Pipe the data once again into grep and reverse the logic of the search (-v) to remove 12.7.0.0.1. Using -v will match all the lines that do not match 127.0.0.1 (aka loopback)
  3. #3. Use Cut to show the second field in the line, using spaces as a delimiter
  4.  
  5. ifconfig | grep 'inet ' | grep -v 127.0.0.1 | cut -d\ -f2

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