Working with ClamaAV on Fedora 25, Redhat 7 and CentOS 7

Greetings,

I'll show you how to install and scan your system using ClamAV.

ClamAV installation is pretty simple.

In Fedora 25, Redhat 7, CentOS 7

# dnf install clamav clamav-update

Before we proceed any furture we would need to check or edit freshclam (to update virus definition)

# vim /etc/freshclam.conf

Please comment "Example" (You will see it at the start)

Then uncomment following lines

DNSDatabaseInfo current.cvd.clamav.net
DatabaseMirror db.XY.clamav.net (change XY to your country for example: gb, us, de, in, ch etc)
DatabaseMirror database.clamav.net

Once that’s done, we will update virus definition

# freshclam

Now, time to scan the system

# clamscan [option] [file/directory]

# clamscan -r /home (r = recursive)

# clamscan -ivr /home (i = infected, v = verbose)

# clamscan --bell –ivr /home (--bell = It will sound bell if it discovers virus)

# clamscan --remove=yes –ivr /home (remove=yes = it means it will remove virus upon detection)

# clamscan -ivr --phishing-sigs=yes --heuristic-scan-precedence=yes /home (it can perform phishing and heuristic scan)

 If you think that’s complicated then install GUI version called ClamTK

 # dnf install clamtk

Please read more about clamscan

# man clamscan
# clamscan --help