# add Typora's key

sudo mkdir -p /etc/apt/keyrings

curl -fsSL https://typoraio.cn/linux/typora.gpg | sudo tee /etc/apt/keyrings/typora.gpg > /dev/null

# add Typora's repository securely

echo "deb [signed-by=/etc/apt/keyrings/typora.gpg] https:/typoraio.cn/linux ./" | sudo tee /etc/apt/sources.list.d/typora.list

sudo apt update

# install typora

sudo apt install typora