Flushing the DNS cache on OS X
I often find that OS X refuses to obey my /etc/hosts file for some time after I change it. It seems that often you have to manually flush the DNS cache by hand to force host file changes to take effect. Under pre-leopard systems, use lookupd : > sudo lookupd -flushcache Starting with Leopard, lookupd has been replaced with dscacheutil : > sudo dscacheutil -flushcache