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1. Install Clamav On Mac
2. Clamav For Mac
3. Clamav Windows
4. Clamav Download For Windows 10
5. Clamav Mac Download
6. Clamav Windows Download

ClamAV is an open-source (GPL) anti-virus engine used widely for situations including email scanning, web scanning, and endpoint security. It provides several utilities including a flexible and scalable multi-threaded daemon, a command-line scanner, and an advanced tool for automatic database updates. Creating ClamAV Antivirus Live USB drive. Red Green Repeat Adventures of a Spec Driven Junkie Setting up ClamAV on macOS 09 Aug 2019. My preferred anti-virus system is ClamAV and I had trouble getting it running on macOS recently.

Using clamscan to do your virus washing and tired of waiting for it to finish? Why not try new, improved clamdscan instead? It mightn’t wash whiter, but it’ll definitely wash quicker.

In Linux – Setting up ClamAV on RHEL we worked through installing the ClamAV antivirus package on Red Hat Enterprise Linux to support some simple, command-line virus checks:-

One thing kinda leaps out from this report – on my box this single file took around 13 seconds to process. As we’ve previously observed, processing multiple files in one batch definitely improves things:-

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13 seconds for one file, 16 seconds for three makes it pretty obvious that clamscan is doing a lot of work when it starts up. This extra time is spent loading the virus database into memory and those nice people from ClamAV have a ready-made way to avoid it. Use clamdscan instead.

Well, okay, it’s not quite that simple. The difference between these two tools is that plain clamscan loads its own virus database and does the processing itself whereas clamdscan is a thin client for the clamd daemon, which keeps its virus database in memory ready to use. So in order to use clamdscan, you need to have clamd running.

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Installing clamd

If you’ve built from source you probably have everything you need to use clamd on your server though you won’t have a script in /etc/init.d to manage it as a service. Since all it needs to do is launch or kill the clamd process (/usr/local/sbin/clamd on my source build) you can easily crib one from your other init.d scripts. The meat of it should look something like this:-

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If you’ve installed a pre-packaged version you might find clamd isn’t part of the basic ClamAV package. On RHEL you need to add the clamd package as well:-

Or if you’re installing from the distribution media:-

Configuring clamd

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If you’re lucky enough to be using the RHEL pre-canned build you’ll find /etc/clamd.conf pretty much good-to-go. Unlike clamscan though, where you can fine-tune a lot of scanning options, clamd will take those settings from this configuration file instead. So if you are using any exotic options you’ll need to make sure they’re set in this file. You might want to review the options in there anyway, perhaps to enable logging.

If you’ve built from source you might find clamd.conf lurking elsewhere – it’s in /usr/local/etc on my source build and named clamd.conf.sample. You’ll need to rename it and comment out the Example line at the top. You’ll also need to enable connections to it – you can use a local socket or a TCP/IP port by uncommenting the LocalSocket and TCPSocket options respectively. You might also want to enable the PidFile for your daemon management script.

Once it’s configured up, you just need to start the service:-

You might also want to make sure it automatically starts up when the server boots:-

Finally, if you’ve scripted up the freshclam command to keep your virus definitions up-to-date clamd won’t automatically pick up these changes. You can add the following command to your cron job, after freshclam has run, to get clamd to reload them:-

Using clamd

Once clamd is up and running don’t think (like I did!) that clamscan will magically find it and use it. You need to switch to using clamdscan instead:-

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Much faster! When migrating any scripted clamscan commands over to using clamdscan remember that most of the command line options for configuring your scan won’t work any more – clamd will use the settings in clamd.conf – so you’ll need to make sure this file contains the common set of options you want to use.