启动nginx的时候输出：
root@wl-Lenovo-B590:/usr/local/nginx/sbin# ./nginx nginx: [emerg] bind() to 0.0.0.0:8100 failed (98: Address already in use) nginx: [emerg] bind() to 0.0.0.0:8100 failed (98: Address already in use) nginx: [emerg] bind() to 0.0.0.0:8100 failed (98: Address already in use) nginx: [emerg] bind() to 0.0.0.0:8100 failed (98: Address already in use) nginx: [emerg] bind() to 0.0.0.0:8100 failed (98: Address already in use) nginx: [emerg] still could not bind() root@wl-Lenovo-B590:/usr/local/nginx/sbin#
这个主要是由于该端口被其他程序占用，只要把占用该端口的进程杀掉就可一了
root@wl-Lenovo-B590:/usr/local/nginx/sbin# ./nginx nginx: [emerg] bind() to 0.0.0.0:8100 failed (98: Address already in use) nginx: [emerg] bind() to 0.0.0.0:8100 failed (98: Address already in use) nginx: [emerg] bind() to 0.0.0.0:8100 failed (98: Address already in use) nginx: [emerg] bind() to 0.0.0.0:8100 failed (98: Address already in use) nginx: [emerg] bind() to 0.0.0.0:8100 failed (98: Address already in use) nginx: [emerg] still could not bind() root@wl-Lenovo-B590:/usr/local/nginx/sbin# netstat -ntpl 激活Internet连接 (仅服务器) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN 900/cupsd tcp 0 0 0.0.0.0:8100 0.0.0.0:* LISTEN 20227/nginx tcp6 0 0 ::1:631 :::* LISTEN 900/cupsd root@wl-Lenovo-B590:/usr/local/nginx/sbin# kill 20227 root@wl-Lenovo-B590:/usr/local/nginx/sbin# ./nginx root@wl-Lenovo-B590:/usr/local/nginx/sbin#
nginx: [emerg] bind() to 0.0.0.0:8100 failed (98: Address already in use),布布扣,bubuko.com
nginx: [emerg] bind() to 0.0.0.0:8100 failed (98: Address already in use)
原文：http://blog.csdn.net/hongkangwl/article/details/22950045