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No grep or sed overload, just pure awk.
There are 8 alternatives - vote for the best!
Returns the IP, broadcast, and subnet mask of your interfaces absent any other extraneous info.
I know it's a bit lame, but I've created an alias for this when I *quickly* want to know what a system's IP is. Small amounts of time add up :)
bash only - no grep, sed, awk, whatever - zero overhead
alternatively using ifconfig instead of "ip addr ..."
A=$(ifconfig eth0); A=${A##*inet addr:}; echo ${A%% *}
If you can do better, submit your command here.
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