# sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys BA300B7755AFCFAE wget -qO - https://typora.io/linux/public-key.asc | sudo apt-key add - # add Typora's repository echo -e "\ndeb https://typora.io/linux ./" | sudo tee -a /etc/apt/sources.list sudo apt-get update # install typora sudo apt-get install typora