安装：

sudo apt-get install python3-psutil curl git gir1.2-appindicator3-0.1
git clone https://github.com/fossfreedom/indicator-sysmonitor.git
cd indicator-sysmonitor
sudo make install
nohup indicator-sysmonitor &

删除：

cd indicator-sysmonitor

sudo make uninstall

ssh：

$ ssh-keygen -o

$ cat ~/.ssh/id_rsa.pub