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I type the "neat" command (CentOS) A network configuration pop-up window is displayed. I double click on active eth1 And I change the Default gaeway address

Is there anyway to automate this?

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2 Answers 2

Reset to default
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You can use the two commands below

route del default # This removes the current default gateway
route add default gw "ipaddress" # This adds the new default gateway

This way you do not even have to restart the network.

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  • these changes will vanish after restart of the system.
    – Christian
    Jan 16, 2010 at 11:48
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the gateway is saved in the file /etc/sysconfig/network. in the file you'll find an entry GATEWAY=a.b.c.d. you could change this with:

sed -i -e 's/ol\.d\.i\.p/ne\.w\.i\.p/' /etc/sysconfig/network
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    Don't forget to either manually remove/replace the old entry, or do a 'service network restart', or 'reboot', to have the change take effect. Just changing the config files doesn't translate into an immediate change.
    – David Mackintosh
    Jan 15, 2010 at 17:57

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