How to Flush DNS in different OS

To flush DNS cache in Microsoft Windows (Win XP, Win ME, Win 2000):--
Start -> Run -> type cmd
- in command prompt, type ipconfig /flushdns
- Done! You Window DNS cache has just been flush.

To flush the DNS cache in Linux, restart the nscd daemon:-
- To restart the nscd daemon, type /etc/rc.d/init.d/nscd restart in your terminal
- Once you run the command your linux DNS cache will flush.

To flush the DNS cache in Mac OS X Leopard:-
- type lookupd -flushcache in your terminal to flush the DNS resolver cache.
ex: bash-2.05a$ lookupd -flushcache
- Once you run the command your DNS cache (in Mac OS X) will flush.
To flush the DNS cache in Mac OS X:-
- type dscacheutil -flushcache in your terminal to flush the DNS resolver cache.
ex: bash-2.05a$ dscacheutil -flushcache
- Once you run the command your DNS cache (in Mac OS X Leopard) will flush.