linux下的程序如何不用root权限绑定1024以下端口

用setcap命令

sudo setcap 'cap_net_bind_service=+ep' /path/to/program

参考：

https://stackoverflow.com/questions/413807/is-there-a-way-for-non-root-processes-to-bind-to-privileged-ports-on-linux#414258