复制链接到下载工具即可下载。
ubuntu-18.04-desktop-amd64.iso
https://mirrors.tuna.tsinghua.edu.cn/ubuntu-releases/18.04/ubuntu-18.04-desktop-amd64.iso
sha1sum: f373c0aec6162cdba76ee9084e695866a15e441a
ubuntu-18.04-live-server-amd64.iso
https://mirrors.tuna.tsinghua.edu.cn/ubuntu-releases/18.04/ubuntu-18.04-live-server-amd64.iso
sha1sum: 0b3490de9839c3918e35f01aa8a05c9ae286fc94
ubuntu-17.10.1-desktop-amd64.iso
https://mirrors.tuna.tsinghua.edu.cn/ubuntu-releases/17.10.1/ubuntu-17.10.1-desktop-amd64.iso
sha1sum: 002d059716f0d0ef33fedd1711f6c86671427747
ubuntu-17.10.1-server-amd64.iso
https://mirrors.tuna.tsinghua.edu.cn/ubuntu-releases/17.10.1/ubuntu-17.10.1-server-amd64.iso
sha1sum: accda0a0f00449e803b28850b3287c2349054553
ubuntu-16.04.4-desktop-amd64.iso
https://mirrors.tuna.tsinghua.edu.cn/ubuntu-releases/16.04.4/ubuntu-16.04.4-desktop-amd64.iso
sha1sum: c9145abdc41011b2fc9b32b9d96175020760e284
ubuntu-16.04.4-server-amd64.iso
https://mirrors.tuna.tsinghua.edu.cn/ubuntu-releases/16.04.4/ubuntu-16.04.4-server-amd64.iso
sha1sum: ee834fbeb94cc55972b38caafa2029c29625e2e8
ubuntu-14.04.5-desktop-amd64.iso
https://mirrors.tuna.tsinghua.edu.cn/ubuntu-releases/14.04.5/ubuntu-14.04.5-desktop-amd64.iso
sha1sum:a782741d92cb1abbed978a41dcca5244435e7a58
ubuntu-14.04.5-server-amd64.iso
https://mirrors.tuna.tsinghua.edu.cn/ubuntu-releases/14.04.5/ubuntu-14.04.5-server-amd64.iso
sha1sum:5e567024c385cc8f90c83d6763c6e4f1cd5deb6f
下载地址：附百度网盘分流
提取密码：46v1