1、查看应用程序占用端口查看端口
root@gmt-NF8480M5:/home/sandra/kms# netstat -tupln | grep -e kurento
tcp6 0 0 :::8888 :::* LISTEN 38861/kurento-media
2、查看ubuntu 版本
root@gmt-PowerEdge-R620:~# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 16.04.1 LTS
Release: 16.04
Codename: xenial
3、挂载NTFS文件系统
1、安装并启动nfs-kernel-server
~#apt-get install nfs-kernel-server
~#apt-get install nfs-common
~#vi /etc/export
~#/home/wanli/work/hi3559a *(rw,sync,no_root_squash)
~#service nfs-kernel-server restart
2、目标机挂载
~#mount -t nfs -o nolock -o tcp -o rsize=32768,wsize=32768 192.168.16.102:/home/wanli/work/hi3559a /mnt
4、ffmpeg rtmp 推流
ffmpeg -thread_queue_size 1024 -i "rtsp://admin:[email protected]:554/Streaming/Unicast/channels/101" -vcodec copy -codec copy -f hls -hls_time 10 "/usr/share/nginx/html/hls/cam01.m3u8"
ffmpeg -thread_queue_size 1024 -i "rtsp://admin:[email protected]:554/Streaming/Channels/101?transportmode=unicast&profile=Profile_1" -vcodec copy -codec copy -f hls -hls_time 10 "/usr/share/nginx/html/hls/cam01.m3u8"
5、Makefile 中 = ，:=，?=，+= 表达式的意思
= 是最基本的赋值
:= 是覆盖之前的值
?= 是如果没有被赋值过就赋予等号后面的值
+= 是添加等号后面的值
6、跟踪Makefile输出调试信息
$(info [message])
$(info $(variable name))
$(info [message] $(variable name) ...)
$(info $(variable name) [message] ...)
7、ssh超时时间设置
修改/etc/ssh/sshd_config 文件
vim /etc/ssh/sshd_config
#ClientAliveInterval 0
#ClientAliveCountMax 3
修改为
ClientAliveInterval 30
ClientAliveCountMax 86400
1、客户端每隔多少秒向服务发送一个心跳数据
2、客户端多少秒没有相应，服务器自动断掉连接
重启 ssh 服务
root@gmt-NF8480M5:/# service sshd restart
