下载校验与命令行
SHA256
bfd1cee02bc4f35db939e69b934ba49a39a378797ce9aee20f6e3e3e728fefbf
curl -O https://releases.ubuntu.com/22.04/ubuntu-22.04.5-live-server-amd64.iso
# 校验文件完整性
md5sum ubuntu-22.04.5-live-server-amd64.iso # 期望