Introduction
In this tutorial we learn how to install clamav-update on CentOS 8.
What is clamav-update
This package contains programs which can be used to update the clamav anti-virus database automatically. It uses the freshclam(1) utility for this task. To activate it use, uncomment the entry in /etc/cron.d/clamav-update. Use this package when you go updating the virus database regulary and do not want to download a >160MB sized rpm-package with outdated virus definitions.
We can use yum or dnf to install clamav-update on CentOS 8. In this tutorial we discuss both methods but you only need to choose one of method to install clamav-update.
Install clamav-update on CentOS 8 Using dnf
Update yum database with dnf using the following command.
sudo dnf makecache --refresh
The output should look something like this:
CentOS Linux 8 - AppStream 43 kB/s | 4.3 kB 00:00
CentOS Linux 8 - BaseOS 65 kB/s | 3.9 kB 00:00
CentOS Linux 8 - ContinuousRelease 43 kB/s | 3.0 kB 00:00
CentOS Linux 8 - Extras 23 kB/s | 1.5 kB 00:00
CentOS Linux 8 - FastTrack 40 kB/s | 3.0 kB 00:00
CentOS Linux 8 - HighAvailability 36 kB/s | 3.9 kB 00:00
CentOS Linux 8 - Plus 24 kB/s | 1.5 kB 00:00
CentOS Linux 8 - PowerTools 50 kB/s | 4.3 kB 00:00
Extra Packages for Enterprise Linux Modular 8 - x86_64 13 kB/s | 9.2 kB 00:00
Extra Packages for Enterprise Linux 8 - x86_64 24 kB/s | 8.5 kB 00:00
Metadata cache created.
After updating yum database, We can install clamav-update using dnf by running the following command:
sudo dnf -y install clamav-update
Install clamav-update on CentOS 8 Using yum
Update yum database with yum using the following command.
sudo yum makecache --refresh
The output should look something like this:
CentOS Linux 8 - AppStream 43 kB/s | 4.3 kB 00:00
CentOS Linux 8 - BaseOS 65 kB/s | 3.9 kB 00:00
CentOS Linux 8 - ContinuousRelease 43 kB/s | 3.0 kB 00:00
CentOS Linux 8 - Extras 23 kB/s | 1.5 kB 00:00
CentOS Linux 8 - FastTrack 40 kB/s | 3.0 kB 00:00
CentOS Linux 8 - HighAvailability 36 kB/s | 3.9 kB 00:00
CentOS Linux 8 - Plus 24 kB/s | 1.5 kB 00:00
CentOS Linux 8 - PowerTools 50 kB/s | 4.3 kB 00:00
Extra Packages for Enterprise Linux Modular 8 - x86_64 13 kB/s | 9.2 kB 00:00
Extra Packages for Enterprise Linux 8 - x86_64 24 kB/s | 8.5 kB 00:00
Metadata cache created.
After updating yum database, We can install clamav-update using yum by running the following command:
sudo yum -y install clamav-update
How To Uninstall clamav-update on CentOS 8
To uninstall only the clamav-update package we can use the following command:
sudo dnf remove clamav-update
clamav-update Package Contents on CentOS 8
/etc/freshclam.conf
/etc/logrotate.d/clamav-update
/usr/bin/freshclam
/usr/lib/.build-id
/usr/lib/.build-id/31
/usr/lib/.build-id/31/088dcdf197eb8829e8a7109458d58452e51bba
/usr/lib/.build-id/35
/usr/lib/.build-id/35/944ee8e2f7629f08c2968cd95a3696b63ee47f
/usr/lib/systemd/system/clamav-freshclam.service
/usr/lib64/libfreshclam.so.2
/usr/lib64/libfreshclam.so.2.0.1
/usr/share/man/man1/freshclam.1.gz
/usr/share/man/man5/freshclam.conf.5.gz
/var/lib/clamav/bytecode.cld
/var/lib/clamav/daily.cld
/var/lib/clamav/main.cld
/var/lib/clamav/mirrors.dat
/var/log/freshclam.log
References
Summary
In this tutorial we learn how to install clamav-update on CentOS 8 using yum and dnf.
