Ubuntu网络问题的解决

ubuntu 显示网络已连接，但是打不开浏览器：

sudo service network-manager stop
sudo rm /var/lib/NetworkManager/NetworkManager.state
sudo service network-manager start

转载于：https://blog.csdn.net/qq_43222384/article/details/122267796

imagemagick

imagemagick的安装

https://blog.csdn.net/willingtolove/article/details/124474837##%20%E6%97%A7%E7%89%88

imagick查看版本号

https://www.yundongfang.com/Yun44006.html

imagemagick的命令介绍

https://imagemagick.org/script/command-line-options.php#crop

ceres solver 介绍