output redirection with sudo

Question

Possible Duplicates:
How to append to a file as sudo?
sudo unable to write to /etc/profile

The following command does not work because the elevated privileges do not apply to the redirection.

sudo echo "myoutput" >> /etc/file_that_only_root_can_write

how can it be done?

Answer 1

echo "myoutput" | sudo tee -a /etc/file_that_only_root_can_write