快捷键：
open a new terminal: ctrl+alt+T;
close current terminal: ctrl+shift+W;
switch windows: alt+tab
switch workspace: ctrl+alt+arrow key;
install deb package: sudo dpkg -i package.deb; dpkg 是Debian package
install rpm package: sudo alien -i package.rpm
install indicator stickynotes: here
pip install psycopg2 error:
Error: You need to install postgresql-server-dev-X.Y for building a server-side extension or libpq-dev for building a client-side application.
solution: here
tar 命令：
https://www.cnblogs.com/peida/archive/2012/11/30/2795656.html
输入法设置：
https://zhuanlan.zhihu.com/p/58837239
扩展屏设置：
menu --- setting --- display.
终端快捷键：
https://www.cnblogs.com/cobbliu/p/3629772.html
python安装：
https://linux.cn/article-8080-1.html
pycharm 快捷键设置：
https://blog.csdn.net/liangkaiping0525/article/details/80294576
https://blog.csdn.net/qq_24805141/article/details/72803293
dockers安装：
offical installation web; Chinese version;
when run: docker run hello-world; it raises error: solution
Got permission denied while trying to connect to the Docker daemon socket
the solution is to add the current user to docker group; use the following command:
sudo gpasswd -a ${USER} docker Adding user wenjing to group docker
or login in on the system as root, then run: docker-compose up -d; Reboot if the issue still persists.