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Choose a gateway according to IP with awk

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# 1  
Old 05-18-2010
Choose a gateway according to IP with awk
Hello, I have to make a script shell with awk function to choose the gateway to apply according to a "IP".

Ex:
Code:
10.121.66.125 10.121.63.122 10.122.68.122

If the adress is in network 10.121.66.x , i set Gateway=10.121.66.3
Or
If the adress is in network 10.121.62.x , i set Gateway=10.121.62.3

Thank you

Moderator's Comments:
Mod Comment Please format your posts next time a bit more eye friendly Smilie
Last edited by zaxxon; 05-18-2010 at 12:30 PM..
# 2  
Old 05-18-2010
Why awk? Like this?

Code:
$> LIST="10.121.66.125 10.121.63.122 10.122.68.122"
$> for A in $LIST; do echo Gateway=${A%.*}.3; done
Gateway=10.121.66.3
Gateway=10.121.63.3
Gateway=10.122.68.3

# 3  
Old 05-19-2010
Thanks a lot
# 4  
Old 05-19-2010
Code:
echo "10.121.66.125 10.121.63.122 10.122.68.122" |sed 's/\([0-9]*\.[0-9]*\.[0-9]*\.\)[0-9]*/\13/g'

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