freshclam 命令

常用示例

说明

freshclam downloads and updates ClamAV virus signature databases. It connects to ClamAV mirrors to fetch the latest malware definitions for the clamscan and clamd scanners. The tool can run as a daemon for automatic updates or be triggered manually. Multiple mirrors provide redundancy. Downloaded databases are verified before installation. freshclam is essential for keeping ClamAV effective against new threats.

参数

-d, --daemon

Run as background daemon.

-c _N_, --checks _N_

Daily checks when running as daemon.

-v, --verbose

Verbose output.

--check

Check for updates without downloading.

--config-file _FILE_

Configuration file path.

-l _FILE_, --log _FILE_

Log file path.

-F, --foreground

When combined with -d, stay in the foreground instead of detaching.

-u _USER_, --user _USER_

When started as root, drop privileges to the given user.

--datadir _PATH_

Override the database directory (default `/var/lib/clamav`).

--stdout

Write all log output to stdout.

--show-progress

Show a progress bar during downloads.

--quiet

Only print error messages.

--no-warnings

Suppress warning messages.

--update-db _NAME_

Only update the named database (`main`, `daily`, `bytecode`).

--on-update-execute _CMD_

Run _CMD_ after a successful update.

--on-error-execute _CMD_

Run _CMD_ when an update fails.

-V, --version

Print version information and exit.

--help

Display help information.