ubuntu md5校验

md5sum file.iso > file.iso.md5

所有版本CD镜像的md5值如下：

c564ae16dffb51a922aef74a07250473 *ubuntu-9.04-alternate-i386.iso
66fa77789c7b8ff63130e5d5a272d67b *ubuntu-9.04-desktop-i386.iso
3b5e9861910463374bb0d4ba9025bbb1 *ubuntu-9.04-alternate-amd64.iso
cace6ea9dde8dc158174e345aabe3fae *ubuntu-9.04-desktop-amd64.iso
8f921e001aebc3e98e8e8e7d29ee1dd4 *ubuntu-9.04-netbook-remix-i386.img
78cf52114804f80576b0bfc8f5984339 *ubuntu-9.04-server-amd64.iso
20480057590ff8b80ad9094f40698030 *ubuntu-9.04-server-i386.iso