I've just installed
apache2 and running this command
apache2ctl start and got this error message,
user@PC: apache2ctl start AH00558: apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1. Set the 'ServerName' directive globally to suppress this message (13)Permission denied: AH00072: make_sock: could not bind to address [::]:80 (13)Permission denied: AH00072: make_sock: could not bind to address 0.0.0.0:80 no listening sockets available, shutting down AH00015: Unable to open logs Action 'start' failed. The Apache error log may have more information.