밑에 xe설치 물어본 유저입니다

답변을 듣고 혹시나 해서 apache를 재실행 했는데 fail이 뜨면서 밑의 것들이 나오는데, 무엇이 빠졌길래 이런 것이 나오는건지 알려주실 수 있으신가요?
구글 번역기 돌려도 뭔 소리인지…

Restarting web server apache2
/usr/sbin/apache2ctl: 87: ulimit: error setting limit (Operation not permitted)
apache2: Could not reliably determine the server’s fully qualified domain name, using 127.0.1.1 for ServerName
/usr/sbin/apache2ctl: 87: ulimit: error setting limit (Operation not permitted)
apache2: Could not reliably determine the server’s fully qualified domain name, using 127.0.1.1 for ServerName
(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
Action ‘start’ failed.
The Apache error log may have more information.