摘录自：https://blog.csdn.net/zhanglianhai555/article/details/76554077
注意：下面说的Master和Slave，都是针对Broker来说的。NameServer本身是无状态得，可以随时启任意多个，组成集群。
https://suclogger.me/RocketMQ/[......]
sudo apt-get install imagemagick
mogrify -resize 50% *.png
mogrify -resize 320x240 *.jpg
mogrify -format JPG -quality 95% *png
[......]
[......]
curl https://rclone.org/install.sh | sudo bash
Usage:
rclone [flags]
rclone [command]
Available Commands:
about Get quota information from the remote.
authorize Remote authorization.
cachestats Print cache st[......]