查看系统的时区

$ ll /etc/localtime
lrwxrwxrwx. 1 root root 35 2月  18 2020 /etc/localtime -> ../usr/share/zoneinfo/UTC

列出有效的时区

$ timedatectl list-timezones
Africa/Abidjan
......
America/New_York
......
Asia/Shanghai
......

设置时区

# timedatectl set-timezone Asia/Shanghai

查看系统的时区

$ ll /etc/localtime
lrwxrwxrwx. 1 root root 35 2月  18 2020 /etc/localtime -> ../usr/share/zoneinfo/Asia/Shanghai

生成身份验证密钥

ssh-keygen -t rsa，在~/.ssh/目录下生成私匙id_rsa和公匙id_rsa.pub两个文件。

$ ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/home/username/.ssh/id_rsa): 直接回车
Enter passphrase (empty for no passphrase): 直接回车
Enter same passphrase again: 直接回车
Your identification has been saved in /home/username/.ssh/id_rsa.
Your public key has been saved in /home/username/.ssh/id_rsa.pub.
The key fingerprint is:
SHA256:foo-YWwIv/a/HGEGt9P6vvmff/QjBGEvzlYM4hBWeR0 username@hostname
The key's randomart image is:
+---[RSA 2048]----+
|         +oo.ooE.|
|        . o..o+. |
|      . .  .. .+ |
|  .    o o  o.o  |
|   o o  S .  +.  |
|    o =+ +  .. ..|
|     + .+ . . o..|
|    o .o = . + .o|
|   . o+o=o+o. o..|
+----[SHA256]-----+

构建YOLOv4容器

• 编写Dockerfile

FROM nvidia/cuda:10.0-cudnn7-devel-ubuntu18.04
LABEL maintainer="wang-junjian@qq.com"

#auto install tzdata(opencv depend)
ENV DEBIAN_FRONTEND=noninteractive

RUN apt-get update && apt-get install -y \
    git wget nano \
    libopencv-dev python3-opencv \
    && rm -rf /var/lib/apt/lists/*

#set your localtime
RUN ln -fs /usr/share/zoneinfo/Asia/Shanghai /etc/localtime

WORKDIR /
// ...

• 构建容器

docker build -t darknet:latest-gpu-yolov4 .

创建工程 工程目录结构 ├── yolov4.conv.137 预训练模型 ├── darknet └── project 工程目录 ├── backup 存储模型训练时权重值 ├── cfg 配置目录 │ ├── train.