liuxg@liuxg:/var/lib/dpkg/info$ apt-cache policy click
click:
  Installed: (none)
  Candidate: 0.4.43+16.04.20160203-0ubuntu2
  Version table:
     0.4.43+16.04.20160203-0ubuntu2 500
        500 http://archive.ubuntu.com/ubuntu xenial/main amd64 Packages