Linux: Anti-virus

[last updated: 2025-10-15]
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• Clamav:
  • Introduction:
    Description in package manager says this collection of programs is mainly for:
    "...integration with mail servers (attachment scanning)"

    There are several versions available on my Mint 22.2 package manager:

    clamav, clamav-freshclam, clamav-base, clam-daemon, clamdscan, + 10 more...
  • Installation:
    • Download: https://www.clamav.net/downloads
    • Install: https://docs.clamav.net/manual/Installing.html
    • Configure: https://docs.clamav.net/manual/Usage/Configuration.html

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  • My Installation History:
    • first attempts (not completely documented/recorded), unsuccessful, abandoned...
      $ sudo apt install clamav clamav-daemon
      $ sudo systemctl stop clamav-freshclam
      $ sudo freshclam
      $ sudo systemctl start clamav-freshclam
      ---------------

    • 2025-04-05:
      • downloaded:
        clamav-1.4.2.linux.x86_64.deb
        clamav-1.4.2.linux.x86_64.deb.new_key.sig
        clamav-1.4.2.linux.x86_64.deb.sig
      • installed:
        $ sudo apt install ~/Downloads/clamav-1.4.0.libnux.x86_64.deb
        Note this instruction is cut and pasted from (... link above), but has a typo,
        and should be ... 1.4.2.linux.x86 ...

      ---------------

    • 2025-10-15:
      • googleAI instructions:
        sudo apt-get install clamav
      • sudo dpkg confirmed successful install of version 1.4.3 (clamav site says 1.5.0 is most current...)
        It also said:
        Depends: clamav-freshclam (>= 1.4.3+dfsg) | clamav-data, libc6 (>= 2.38), libclamav12 (>= 1.4.3), libcurl4t64 (>= 7.16.2), libgcc-s1 (>= 4.2), libjson-c5 (>= 0.15), zlib1g (>= 1:1.2.3.3)
        dpkg confirmed clamav-freshclam was also installed...

        Recommends: clamav-base (also installed, per dpkg)
        Suggests: libclamunrar, clamav-doc

      • Ran on both BeeLink and MinisForum:
        $ sudo clamscan -r -i ~/

        Took about 0:45. No infected files found. Disappointing, so not sure what is causing slow-downs.

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    • Verify installation:
      $ apt info clamav

      However this command did not work. The 'info' parameter perhaps is not supported in my version.
      But this did work:

      $ sudo dpkg -s clamav

      and showed successful install.

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    • Scan your system with ClamAV::
      • $ sudo clamscan -r –bell -i /
        -r: Recursive scan.
        –bell: Beep when a virus is found.
        -i: Only show infected files.
        Infected files will be listed in the terminal output.
      • or:
        $ clamscan --recursive /
        This executed, though gave error:
        "No such file or directory: /usr/local/share/clamav"

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    • Links:
      https://fossies.org/linux/clamav/docs/html/manual/Usage/Scanning.html

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  • other software...
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