我安装了 ClamAV。设置已经完成了一段时间，但我注意到，显然，FreshClam 自 9 月 22 日以来就没有运行过：
[x80486@uplink:~]$ sudo cat /var/log/clamav/freshclam.log
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ClamAV update process started at Fri Jun 30 15:31:00 2023
daily database available for download (remote version: 26955)
Testing database: '/var/lib/clamav/tmp.9c82164f10/clamav-cc2397910639c7390c4707d791014939.tmp-daily.cvd' ...
Database test passed.
daily.cvd updated (version: 26955, sigs: 2037934, f-level: 90, builder: raynman)
main database available for download (remote version: 62)
Testing database: '/var/lib/clamav/tmp.9c82164f10/clamav-2ebd9ccfd37f99327a8188293f1c3485.tmp-main.cvd' ...
Database test passed.
main.cvd updated (version: 62, sigs: 6647427, f-level: 90, builder: sigmgr)
bytecode database available for download (remote version: 334)
Testing database: '/var/lib/clamav/tmp.9c82164f10/clamav-1c6f9beb685cf5d255c0fc2a11405c58.tmp-bytecode.cvd' ...
Database test passed.
bytecode.cvd updated (version: 334, sigs: 91, f-level: 90, builder: anvilleg)
WARNING: Clamd was NOT notified: Can't connect to clamd through /run/clamav/clamd.ctl: No such file or directory
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freshclam daemon 1.0.1 (OS: Linux, ARCH: x86_64, CPU: x86_64)
ClamAV update process started at Fri Jun 30 15:38:12 2023
daily.cvd database is up-to-date (version: 26955, sigs: 2037934, f-level: 90, builder: raynman)
main.cvd database is up-to-date (version: 62, sigs: 6647427, f-level: 90, builder: sigmgr)
bytecode.cvd database is up-to-date (version: 334, sigs: 91, f-level: 90, builder: anvilleg)
--------------------------------------
...
--------------------------------------
Received signal: wake up
ClamAV update process started at Thu Sep 21 13:02:41 2023
daily database available for update (local version: 27037, remote version: 27038)
Testing database: '/var/lib/clamav/tmp.e048a53c2e/clamav-0dad46f97ba861f4cdc80aebfee2b3dc.tmp-daily.cld' ...
Database test passed.
daily.cld updated (version: 27038, sigs: 2041081, f-level: 90, builder: raynman)
main.cvd database is up-to-date (version: 62, sigs: 6647427, f-level: 90, builder: sigmgr)
bytecode.cvd database is up-to-date (version: 334, sigs: 91, f-level: 90, builder: anvilleg)
Clamd successfully notified about the update.
--------------------------------------
Received signal: wake up
ClamAV update process started at Thu Sep 21 20:15:53 2023
daily.cld database is up-to-date (version: 27038, sigs: 2041081, f-level: 90, builder: raynman)
main.cvd database is up-to-date (version: 62, sigs: 6647427, f-level: 90, builder: sigmgr)
bytecode.cvd database is up-to-date (version: 334, sigs: 91, f-level: 90, builder: anvilleg)
--------------------------------------
Update process terminated
的内容freshclam.log及其修改时间戳是对齐的：
[x80486@uplink:~]$ ll /var/log/clamav/
total 248K
-rw-r----- 1 clamav 130K Dec 29 16:50 clamd.log
-rw-r----- 1 clamav 108K Sep 22 05:57 freshclam.log
无论如何，我看到 ClamAV 声明其病毒数据库是最新的（今天是 2023 年 12 月 29 日）：
[x80486@uplink:~]$ clamscan --version
ClamAV 1.2.1/27138/Fri Dec 29 04:39:08 2023
我不完全明白这怎么可能