Ubuntu停解决Depends: aaa (< 2.31) but bbb is to be installed

Ubuntu下解决Depends: aaa (< 2.31) but bbb is to be installed

经常在ubuntu下由于更新package不成功，或者误删除了一些文件会出现

Depends: aaa? (< 2.31) but bbb is to be installed

解决方法是先试着安装所缺的package，一般不会成功。这时，可以
sudo apt-get purge bbb

然后再安装