I have followed this steps to install ClamAV
1.
sudo apt install clamav
2.
sudo systemctl stop clamav-freshclam
3.
sudo freshclam
4.
sudo systemctl start clamav-freshclam
But after step 3 I received this output
Tue Oct 16 05:08:35 2018 -> ClamAV update process started at Tue Oct 16 05:08:35 2018 Tue Oct 16 05:08:54 2018 -> Downloading main.cvd [100%] Tue Oct 16 05:09:10 2018 -> main.cvd updated (version: 58, sigs: 4566249, f-level: 60, builder: sigmgr) Tue Oct 16 05:09:10 2018 -> *Can't query main.58.93.1.0.6810BC8A.ping.clamav.net Tue Oct 16 05:09:18 2018 -> Downloading daily.cvd [100%] Tue Oct 16 05:09:29 2018 -> daily.cvd updated (version: 25040, sigs: 2122685, f-level: 63, builder: neo) Tue Oct 16 05:09:29 2018 -> *Can't query daily.25040.93.1.0.6810BC8A.ping.clamav.net Tue Oct 16 05:09:29 2018 -> Downloading bytecode.cvd [100%] Tue Oct 16 05:09:31 2018 -> bytecode.cvd updated (version: 327, sigs: 91, f-level: 63, builder: neo) Tue Oct 16 05:09:31 2018 -> *Can't query bytecode.327.93.1.0.6810BC8A.ping.clamav.net Tue Oct 16 05:09:38 2018 -> Database updated (6689025 signatures) from db.local.clamav.net (IP: 104.16.188.138) Tue Oct 16 05:09:38 2018 -> !NotifyClamd: Can't find or parse configuration file /etc/clamav/clamd.conf
I don't know if this has been a successful update or I should do anything more...
Thanks in advance...
You probably haven't configured clamav, hence the error message:
But that's ok it's just a !Notify. You don't need to do anything more if you don't want to.
The defaults for clamav are good, and you were able to download all the signatures, so it's working.
If you want to customise your installation, then read
man clamd.conf