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My ISP's DNS server has problems resolving lots of important websites like google, github, gmail etc. As a hack I manually edited the /etc/resolv.conf file to Google's 8.8.8.8. But the changed file remodifies to my ISP's DNS service when there's a network change. How do I automatically set /etc/resolv.conf to Google's DNS in the event of a network change and when I restart my computer using bash scripting.

I'm new to scripting on Linux. I'd need pointers on how to go about writing a script for this. Thanks.

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  • The solution may vary based on your distro/network management setup. Could you tell us what distro you're using? – int_541 Mar 15 '20 at 8:52
  • I use an Ubuntu 18.04.4 LTS. – Emma Bashorun Mar 15 '20 at 9:01
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    Please refer to this answer on AskUbuntu: askubuntu.com/a/63163 – int_541 Mar 15 '20 at 9:02
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/etc/resolv.conf file is usually managed by your network manager.

You can force your network manager to use specific DNS server.

For example, if you have Gnome, then in gnome-control-center you can do this:

enter image description here

The procedure will be similar for others network managers.

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