Clearing DNS Cache

Sometimes I need to clear DNS cache to test some changes and such.

Windows

Tested on XP SP2:

ipconfig /flushdns
net stop dnscache
net start dnscache

If you have nscd (Name Service Caching Daemon) running, you just have to restart the service (tested on Fedora 8):

/etc/rc.d/init.d/nscd restart

For bind, you could restart it doing the following command (tested on Fedora 8):

/etc/init.d/named restart

Tested 10.4.11:

lookupd -flushcache