Ubuntu install process show "dpkg was interrupted,you must manually run dpkg --configure -a to correct the problem"

在ubuntu下安装应用程序的时候总是提示：

dpkg was interrupted, you must manually run 'dpkg --configure -a' to correct the problem.  E: _cache->open() failed, please report.

解决问题：

sudo su

password

sudo dpkg --configure -a

sudo apt-get update

sudo apt-get upgrade

If you've already tried this or you try it now and it isn't working then post the full output from apt-get here.

What package was being installed when apt-get failed? You should be able to see this in the output just prior to the error message you've shown.