apt-get install clamav clamav-daemon clamav-freshclam
ClamAV broke every 0.94 version worldwide at about 3:30pm eastern by my count, deliberately to prevent use of the older daemon for no apparent reason from what I can tell. Thankfully it didn't break anyone that was paying money for the services they were getting that I run (work's stuff was properly maintained and updated, and of course my own stuff wasn't, shock horror)
Consider that your public service message for today.
Also Battle Creek smells like cereal all the time. If you spend hours there, you'll smell like it too, and taste it long after leaving. This sounds desirable when described here. It's not.
But they do have a bar that serves ostrich burgers. They're delicious. One less item on the "weird shit to do before I die" list.