This is the output of
apt-cache policy firefox
firefox: Installed: 26.0~linuxmint1+lmde Candidate: 26.0~linuxmint1+lmde Version table: *** 26.0~linuxmint1+lmde 0 500 http://packages.linuxmint.com/ debian/import amd64 Packages 100 /var/lib/dpkg/status
The version is shown as
26.0~linuxmint1+lmde, what is the
0 that comes after it? I have tried with various packages and there is always a
0 after the package version. Presumably, this can also take other values but I haven't seen it.
I read through both the
info pages of
apt-cache and could not find anything relevant. The only explanation of
policy [pkg...] policy is meant to help debug issues relating to the preferences file. With no arguments it will print out the priorities of each source. Otherwise it prints out detailed information about the priority selection of the named package.