Reinstall Ubuntu With A Single Command [Quick Tip]

The following command will reinstall all the packages and reconfigures them automatically:

sudo dpkg-reconfigure -phigh -a

This is very useful in case of an unsuccessful upgrade or when something went very bad and you don't have a back-up.

If, however, you have some minor dependency errors, instead of the command above (which will take about an hour to finish), use this command instead (I'm sure you already know it):

sudo apt-get install -f

[tip via aldeby.org]