How to flush DNS cache in Linux
Answer:
If nscd was installed, simply restart it.
/etc/init.d/nscd restart
Dec 192009
How to change the DNS setting?
Answer:
1. Edit the /etc/resolv.conf file, assume Debian/Ubuntu
sudo vi /etc/resolv.conf
2. Add or replace, e.g. using Google Public DNS servers
nameserver 8.8.8.8
nameserver 8.8.4.4
3. Done.
