我如何使用 APT 找出它引用的是哪个包?
host# apt-get install xvnc4viewer
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Package xvnc4viewer is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package 'xvnc4viewer' has no installation candidate
host#
host#
host#
host# apt-cache show xvnc4viewer
N: Can't select versions from package 'xvnc4viewer' as it is purely virtual
N: No packages found
host#