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.
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