apache 问题

tinguys@tinguys-desktop:~$ apache2 -k graceful
apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1 for ServerName
httpd not running, trying to start
(13)Permission denied: make_sock: could not bind to address 0.0.0.0:80
no listening sockets available, shutting down
Unable to open logs


tinguys@tinguys-desktop:~$ sudo /etc/init.d/apache2 restart
[sudo] password for tinguys:
* Restarting web server apache2 apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1 for ServerName
apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1 for ServerName
[ OK ]
tinguys@tinguys-desktop:~$