Updating ClamAV database when offline

[Kieran O Leary]

Hi all,

This is more for those who have their BitCurator install removed from any network/internet. How are folks updating the anti-virus definitions within ClamAV? Is it some sort of process for manually downloading the CVD files and installing them that way?

Or perhaps anti-virus checks happen outside this environment?

Curious to get any feedback on this, thanks!

Best,

Kieran O'Leary

Digital Preservation Manager

National Library of Ireland

[Kam Woods]

ClamAV is installed from the official repository, and the database files live in /var/lib/clamav. You can download the three files from the following locations:

https://database.clamav.net/main.cvd

https://database.clamav.net/dialy.cvd

https://database.clamav.net/bytecode.cvd

Then using your method of choice copy them to the offline machine. Then from whatever directory they are now in, copy them into /var/lib/clamav using the terminal as follows (the old files will be overwritten):

cd /directory/location/of/your/files

sudo cp main.cvd /var/lib/clamav (repeat for the other two files, or use *.cvd instead of main.cvd to do all three at once)

and make sure the permissions are correct:

sudo chown clamav:clamav /var/lib/clamav

sudo chmod 644 /var/lib/clamav/main.cvd (repeat for the other two files, or use *.cvd to do all three at once)

Kam

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[Kieran O Leary]

You’re wonderful as usual, thank you so much for this detailed explanation!

Best,

Kieran

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