freshclam(1)
NAME
freshclam - update virus databases
SYNOPSIS
freshclam [options]
DESCRIPTION
freshclam is a virus database update tool for ClamAV.
OPTIONS
Freshclam reads its configuration from freshclam.conf. The settings can
be overwritten with command line options.
-h, --help
Output help information and exit.
-V, --version
Print version number and exit.
-v, --verbose
Be verbose. This option causes freshclam to print much
additional information.
--debug
Enable debug messages from LibClamAV.
--quiet
Be quiet - output only error messages.
--no-warnings
Don't print and log warnings.
--stdout
Write all messages to stdout.
--config-file=FILE
Read configuration from FILE.
-l FILE, --log=FILE
Log report to FILE.
-d, --daemon
Run in a daemon mode. Defaults to 12 checks per day unless
otherwise specified by --checks or freshclam.conf.
-p FILE, --pid=FILE
Write daemon's pid to FILE.
-u USER, --user USER
Run as USER. By default (when started by root) freshclam drops
privileges and operates as the '' user.
--no-dns
This option forces old non-DNS verification method (without a
TTL delay).
-c #n, --checks=#n
Check #n times per day for a new database. #n must be between 1
and 50.
--datadir=DIRECTORY
Install new database in DIRECTORY. The directory must be
writable for the '' user or unprivileged user running freshclam.
--daemon-notify=/path/to/clamd.conf
Notify the daemon about the new database. By default it reads a
hardcoded config file but you can use a different one. Both
local and TCP sockets are supported.
-a IP, --local-address=IP
Use (local) IP for HTTP downloads. Useful for multi-homed
systems. If binding fails for whatever reason, a warning is
issued and freshclam behaves like without this flag.
--on-update-execute=COMMAND
Execute COMMAND after successful update.
--on-error-execute=COMMAND
Execute COMMAND if error occurred. Remember, that virus database
freshness is the most important thing in anti-virus system. With
this option freshclam can alert you (eg. send SMS) when
something is going wrong.
--on-outdated-execute=COMMAND
Execute COMMAND when freshclam reports outdated version. In the
command string %v will be replaced by the new version number.
--list-mirrors
Print mirror details from mirrors.dat (cache file for the mirror
manager).
--submit-stats[=/path/to/clamd.conf]
Upload detection statistics to the ClamAV Project (see
freshclam.conf(5):SubmitDetectionStats for more details). No
database update will be performed. This option only works in the
interactive mode.
--update-db=DBNAME
With this option you can limit updates to a subset of database
files. The DBNAME should be "main", "daily", "bytecode",
"safebrowsing" or one of the 3rd party database names. This
option can be used multiple times and only works with the
official and 3rd party databases distrubuted through the ClamAV
mirrors, your custom databases (specified with DatabaseCustomURL
in freshclam.conf) will not be ignored.
--enable-stats
Enable submission of statistical data.
--stats-host-id=UUID
HostID in the form of an UUID to use when submitting statistical
information.
EXAMPLES
(0) Download database to default directory:
freshclam
(1) Download database to current directory:
freshclam --datadir=.
(2) Run as a daemon and check 2 times per day for new database:
freshclam -d -c 2
RETURN CODES
Some return codes of freshclam can be overwritten with a built-in command EXIT_n which can be passed to --on-*-execute, eg. --on-update-execute=EXIT_1 will force freshclam to always return 1 after successful database update. 0 : Database is up-to-date or successfully updated. 40: Unknown option passed. 50: Can't change directory. 51: Can't check MD5 sum. 52: Connection (network) problem. 53: Can't unlink file. 54: MD5 or digital signature verification error. 55: Error reading file. 56: Config file error. 57: Can't create new file. 58: Can't read database from remote server. 59: Mirrors are not fully synchronized (try again later). 60: Can't get information about '' user from /etc/passwd. 61: Can't drop privileges. 62: Can't initialize logger.
FILES
/etc/clamav/freshclam.conf
CREDITS
Please check the full documentation for credits.
AUTHOR
Tomasz Kojm <tkojm@clamav.net>, Kevin Lin <klin@sourcefire.com>
SEE ALSO
freshclam.conf(5), clamd(8), clamd.conf(5), clamscan(1)
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