freshclam man page on aLinux

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freshclam(1)			Clam AntiVirus			  freshclam(1)

       freshclam - update virus databases

       freshclam [options]

       freshclam is a virus database update tool for ClamAV.

       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	 addi‐
	      tional information.

	      Be quiet - output only error messages.

	      Don't print and log warnings.

	      Write all messages to stdout.

       -l FILE, --log=FILE
	      Write download report to FILE.

	      Install  new  database  in  DIRECTORY.  The  directory  must  be
	      writable for the '' user or unprivileged user running freshclam.

       -u USER, --user USER
	      Run as USER. By default (when started by root)  freshclam	 drops
	      privileges and operates as the '' user.

       -d, --daemon
	      Run  in  a daemon mode. This option requires --checks.  -p FILE,
	      --pid=FILE Write daemon's pid to FILE.

	      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.

	      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  sys‐
	      tems.  If binding fails for whatever reason, a warning is issued
	      and freshclam behaves like without this flag.

	      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	 some‐
	      thing is going wrong.

	      Execute COMMAND after successful update.

	      Execute  COMMAND when freshclam reports outdated version. In the
	      command string %v will be replaced by the new version number.

	      Print mirror details from mirrors.dat (cache file for the mirror

	      Upload  detection	 statistics  to the ClamAV Project (see fresh‐
	      clam.conf(5):SubmitDetectionStats for more details). No database
	      update will be performed. This option only works in the interac‐
	      tive mode.

       (0) Download database to default directory:


       (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

       Some return codes of freshclam can be overwritten with a built-in  com‐
       mand EXIT_n which can be passed to --on-*-execute, eg. --on-update-exe‐
       cute=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.


       Please check the full documentation for credits.

       Tomasz Kojm <>

       clamd(8), clamdscan(1), clamscan(1), sigtool(1), clamd.conf(5), clamav-

ClamAV 0.96		       February 12, 2007		  freshclam(1)

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