Update ClamAV in Ubuntu..
First of all.. Visit the ClamAV website for the latest definitions (you have to right click and choose save link as… on the menu) and save them in your home directory, or just open up a terminal and do this..
then..
and..
sudo mv daily.cvd main.cvd /var/lib/clamav
Which will move the newly downloaded files to the correct /var/lib/clamav directory.
Now enter your admin password & you should have completely up to date virus definitions 
WARNING: This will only work if the ClamAV team use the same link every time for the daily updates?
To keep up to date with the definitions then, open a terminal &
Which will download the latest definitions to your home directory, then..
sudo mv daily.cvd /var/lib/clamav
..to transfer them to the correct directory again.
Just found this out myself and it should help you all out 
when I try sudo it ask me my password and when I try to type it doesn’t work. How should I manage please ?
type your password – nothing will show up, but just type it anyway, then press enter
Why aren’t you just typing “freshclam” as root (or sudo)??? Also, the included service clamav-freshclam will do this for you at boot time. This process you list hurts my head..
FreshClam doesn’t always seem to work, so this is for people who want to do it manually
I got the updates and everything, just had to put sudo before wget. Also it did not update the definition in the program though.. it says i have to be root still in the gui part. or how do i do the command line version to run the scan or add those new definitions? freshclam does not work.. im useing ubuntu hardy heron
thank you for good informations
thanks a lot for informations!!! All the best
Thanks
I wonder how to scan with clamav, is there any GUI?
sudo apt-get install clamtk
Freshclam issues: in my experience, freshclam fails because it has uncommented proxy lines in /etc/clamav/freshclam.conf Just comment out these, and it should work just fine.
And thanks again
nicely done …
If you do it manually, just create a script to freshen up your clamav main & daily cvd’s. Then you don’t need freshclam
But… after altering freshclam.conf its working also good … so in the end we have 3 nice solutions
- manually update main&daily
- make a script that does the manualy part of updating
- alter freshclam.conf and use freshclam
NICE
If you’re going to do this way, you should probably grab the bytecode.cvd and the safebrowsing.cvd using wget too.
Thanks guys it worked perfectly for me