Nginx [emerg]: bind() to 0.0.0.0:80 failed (98: Address already in use)

root@menggang-ubuntu:/usr/local/nginx/sbin# ./nginx

nginx: [emerg] bind() to 0.0.0.0:1935 failed (98: Address already in use)

nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)

nginx: [emerg] bind() to 0.0.0.0:1935 failed (98: Address already in use)

nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)

nginx: [emerg] bind() to 0.0.0.0:1935 failed (98: Address already in use)

nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)

nginx: [emerg] bind() to 0.0.0.0:1935 failed (98: Address already in use)

nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)

nginx: [emerg] bind() to 0.0.0.0:1935 failed (98: Address already in use)

nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)

nginx: [emerg] still could not bind()

root@menggang-ubuntu:/usr/local/nginx/sbin# sudo fuser -k 80/tcp

80/tcp:              13686 13687

root@menggang-ubuntu:/usr/local/nginx/sbin# sudo fuser -k 1935/ycp

Specified filename 1935/ycp does not exist.

root@menggang-ubuntu:/usr/local/nginx/sbin# sudo fuser -k 1935/tcp

root@menggang-ubuntu:/usr/local/nginx/sbin# sudo fuser -k 1935/tcp

root@menggang-ubuntu:/usr/local/nginx/sbin# ./nginx

root@menggang-ubuntu:/usr/local/nginx/sbin# pkill ngnix

root@menggang-ubuntu:/usr/local/nginx/sbin# pkill ngnix

root@menggang-ubuntu:/usr/local/nginx/sbin# pkill nginx

root@menggang-ubuntu:/usr/local/nginx/sbin# ./nginx

root@menggang-ubuntu:/usr/local/nginx/sbin# pkill nginx

root@menggang-ubuntu:/usr/local/nginx/sbin# ./nginx