Fedora 44

Install Clam AntiVirus2026/05/11

 

Install Clam AntiVirus to protect your System from Computer Virus.

[1] Install Clamav.
[root@dlp ~]#
dnf -y install clamav clamav-freshclam
[root@dlp ~]#
vi /etc/freshclam.conf
# line 8 : comment out if it is enabled

#
Example
# update pattern files manually

[root@dlp ~]#
freshclam

ClamAV update process started at Mon May 11 14:15:56 2026
daily database available for download (remote version: 27996)
Time:    2.5s, ETA:    0.0s [========================>]   22.32MiB/22.32MiB
Testing database: '/var/lib/clamav/tmp.e12af9f0a1/clamav-fb1a9fd57c37b9834f4535d771ced9f5.tmp-daily.cvd' ...
Database test passed.
daily.cvd updated (version: 27996, sigs: 355446, f-level: 90, builder: svc.clamav-publisher)
main database available for download (remote version: 63)
Time:    8.4s, ETA:    0.0s [========================>]   84.95MiB/84.95MiB
Testing database: '/var/lib/clamav/tmp.e12af9f0a1/clamav-632228e635bb94d0d81c5c4a0777daa9.tmp-main.cvd' ...
Database test passed.
main.cvd updated (version: 63, sigs: 3287027, f-level: 90, builder: tomjudge)
bytecode database available for download (remote version: 339)
Time:    0.1s, ETA:    0.0s [========================>]  275.10KiB/275.10KiB
Testing database: '/var/lib/clamav/tmp.e12af9f0a1/clamav-d3718ca7a46ef2722754d86a944606cc.tmp-bytecode.cvd' ...
Database test passed.
bytecode.cvd updated (version: 339, sigs: 80, f-level: 90, builder: nrandolp)
[2] Try to scan the Fedora Server.
# scan [/home]

[root@dlp ~]#
clamscan --infected --remove --recursive /home
----------- SCAN SUMMARY -----------
Known viruses: 3627854
Engine version: 1.4.4
Scanned directories: 2
Scanned files: 3
Infected files: 0
Data scanned: 0.00 MB
Data read: 0.00 MB (ratio 0.00:1)
Time: 7.503 sec (0 m 7 s)
Start Date: 2026:05:11 14:17:21
End Date:   2026:05:11 14:17:29

# download trial virus

[root@dlp ~]#
wget https://files.trendmicro.com/products/eicar-file/eicar.com
[root@dlp ~]#
clamscan --infected --remove --recursive .

# just detected and removed

/root/eicar.com: Eicar-Test-Signature FOUND
/root/eicar.com: Removed.

----------- SCAN SUMMARY -----------
Known viruses: 3627854
Engine version: 1.4.4
Scanned directories: 5
Scanned files: 9
Infected files: 1
Data scanned: 0.00 MB
Data read: 0.00 MB (ratio 0.00:1)
Time: 7.523 sec (0 m 7 s)
Start Date: 2026:05:11 14:18:01
End Date:   2026:05:11 14:18:08
Matched Content