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klaus 写了：

loukingjr 写了： It's a little late for me to ask this since I've been using VirtualBox for 5+ years but, what is the difference, if any, between Oracle_VM_VirtualBox_Extension_Pack-4.3.18.vbox-extpack and Oracle_VM_VirtualBox_Extension_Pack-4.3.18-46516.vbox-extpack? There are always two Extension Pack files and they both are the same size and both work. Just curious why there is always two.

Rather easy to explain: we started with a version-revision combination like we always used for package naming. Then it turned out that it's not terribly clever in this case, as the GUI can download extpack updates, and if it's a build from the public repository it uses different revisions. So such builds couldn't know the revision. So we introduced a symlink on the download server which doesn't have the revision part... the two are always identical.