ubuntu安装nginx，由于80端口已经被占用，sudo apt-get install nginx安装一半异常退出，报错误：
dpkg: error processing package nginx (--configure):
dependency problems - leaving unconfigured
No apport report written because the error message indicates its a followup error from a previous failure.
Errors were encountered while processing:
nginx-core
nginx
E: Sub-process /usr/bin/dpkg returned an error code (1)
再往上查询会看到错误
nginx: [emerg] bind() to [::]:80 failed (98: Address already in use)
修复办法：
1.将80端口解绑，已占用的程序改用其他端口，将提示的错误解决后
2.运行以下命令卸载一半的安装:
sudo apt-get remove nginx*
sudo apt-get autoremove
sudo apt-get install nginx即可重新安装
