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To fight against my procrastination I changed /etc/hosts on my Ubuntu (11.10) laptop. The /etc/hosts looks now like

127.0.0.1 facebook.com  
127.0.0.1 plus.google.com  
127.0.0.1 twitter.com  

and many more time-eaters in it!

But if I type now facebook.com in my browser it still works.

Is there a DNS cache or something?

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By the way, you can put multiple entries on one line--127.0.0.1 facebook.com plus.google.com twitter.com stackoverflow.com etc. –  Chris Morgan Feb 18 '12 at 13:39
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migrated from stackoverflow.com Feb 18 '12 at 14:02

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1 Answer

up vote 2 down vote accepted

Are you perhaps going to www.facebook.com rather than facebook.com? You probably want to block www. variants as well.

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such an easy answer... i was searching really long for deleting the dns cache... thanks for your help! –  Joerg Feb 18 '12 at 13:58
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