在Ubuntu上升级Nginx到最新版，可参考以下步骤：
sudo cp -r /etc/nginx /etc/nginx_backup。sudo mkdir -p /etc/apt/keyrings。curl -fsSL https://nginx.org/keys/nginx_signing.key | sudo gpg --dearmor -o /etc/apt/keyrings/nginx.gpg。echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/nginx.gpg] https://nginx.org/packages/ubuntu $(lsb_release -cs) nginx" | sudo tee /etc/apt/sources.list.d/nginx.list > /dev/null。sudo apt update。sudo apt install nginx。nginx -v查看版本。systemctl status nginx查看服务状态。
