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I need to scan files larger than 4GB, I tried the following solutions:

1- I tried to edit the clamd.conf and set the MaxScanSize 100000M MaxFileSize 100000M (Just any arbitrary size that's larger than 4GB.)

2- And used clamscan with --max-filesize=20000M --max-scansize=20000M And this one worked for a large amount of files but not files larger than 4GB

I read somewhere that you can use the split command to split larger files and then direct them to clamscan.

But i didn't understand what does it do exactly and how to use with the clamscan command that worked for the most part. Here is the clamscan command that worked. For 101GB of files It successfully scanned 95GB out of them and left the rest.

clamscan --max-filesize=20000M --max-scansize=20000M -r --bell -v -i --move=/home/username/Documents/infected /home/username/Documents/

It gave the warning that the maximum size is 4GB and it was reset back to 4GB and then started.

Please let me know what does the split command does exactly and how to use it if i am scanning a large directory.

Also, should I ever use sudo clamscan / for the whole system ? or is the home folder (or what ever directory that don't require root privileges) enough?

Thanks in advance.

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  • From https://unix.stackexchange.com/q/193059/320598: "* I'm using clamav/clamscan, where the man page say's it can scan files up to 4GB.*" So did you try to read the manual page? – U. Windl Aug 18 '22 at 23:25

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