创建一个:
$ time dd if=/dev/zero of=test bs=128k count=1512 oflag=dsync
用tcpdump以文本形式查看报文内容:
$ sudo tcpdump -p -i eth0 -s 0 -l -w - dst port 6666 and dst host l-mem1.f.cn1.qunar.com | strings | grep set
创建一个:
$ time dd if=/dev/zero of=test bs=128k count=1512 oflag=dsync
用tcpdump以文本形式查看报文内容:
$ sudo tcpdump -p -i eth0 -s 0 -l -w - dst port 6666 and dst host l-mem1.f.cn1.qunar.com | strings | grep set
参考文档
$ git clone 	https://github.com/cmusatyalab/openface
$ cd openface
Instructions tested with a Raspberry Pi 2 with an 8GB memory card. Probably also works fine on a Raspberry Pi 3.
Download the latest Raspbian Jessie Light image. Earlier versions of Raspbian won't work.
Write it to a memory card using Etcher, put the memory card in the RPi and boot it up.
$ sudo i2cdetect -y 1
Error:Could not open file `/dev/i2c-1': No such file or dire