Use Custom DNS Name Server

After finding that my school network provided DNS name server doesn't work on my laptop(specifically my Arch Linux system, not my Windows system), I set custom DNS name server for my Arch Linux system.

I use NetworkManager to manage my computer network. It automatically query network provider(like a WiFi) and set DNS name server for me by modifying /etc/resolve.conf. To set custom DNS name server, the first step is disable NetworkManager's auto setting DNS behavior. Write those content into /etc/NetworkManager/conf.d/dns.conf (refer to NetworkManager#Unmanaged_/etc/resolv.conf - ArchWiki)

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[main]
dns=none

Then restart NetworkManager by executing command sudo systemctl restart NetworkManager

Then you can change the content of /etc/resolve.conf happily :). Here I use the Google's DNS name server.

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nameserver 8.8.8.8
nameserver 8.8.4.4

After that, you can use dig tool(in Arch Linux Pakcage bind) to check your DNS setting, for instance, dig raw.githubusercontent.com.

Enjoy!