How do I flush out the DNS resolver cache?

Question

On Microsoft Windows OS, at the command prompt, I issue the command ipconfig /flushdns to flush out the DNS resolver cache.

On Ubuntu 12.10, what is the corresponding command?

score 4 · Answer 1 · answered Mar 23 '13 at 16:12

4

You do that by restarting nscd

To install nscd Just press Ctrl+Alt+T on your keyboard to open Terminal. When it opens, run the command below:

sudo apt-get install nscd

To flush DNS Cache do:

sudo /etc/init.d/nscd restart

answered Mar 23 '13 at 16:12

Mitch

1

Synaptic has this in the description: "A daemon which handles passwd, group and host lookups for running programs and caches the results for the next query. You should install this package only if you use **slow services** like LDAP, NIS or NIS+." So is that why it isn't installed by default? (I don't have it installed.) – Mar 23 '13 at 16:40
Ubuntu doesn't include nscd in the default installation. I really don't know why, but I guess its because it doesn't cache dns names by default. – Mitch Mar 23 '13 at 17:15

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